638103480

素因数分解:

$2^3\times 3^1\times 5^1\times 7^3\times {\mathrm{37}}^1\times {\mathrm{419}}^1$

素因数の和:491

約数の個数: 256

約数和(自身を含む): 2298240000

約数和(自身を除く): 1660136520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 37, 40, 42, 49, 56, 60, 70, 74, 84, 98, 105, 111, 120, 140, 147, 148, 168, 185, 196, 210, 222, 245, 259, 280, 294, 296, 343, 370, 392, 419, 420, 444, 490, 518, 555, 588, 686, 735, 740, 777, 838, 840, 888, 980, 1029, 1036, 1110, 1176, 1257, 1295, 1372, 1470, 1480, 1554, 1676, 1715, 1813, 1960, 2058, 2072, 2095, 2220, 2514, 2590, 2744, 2933, 2940, 3108, 3352, 3430, 3626, 3885, 4116, 4190, 4440, 5028, 5145, 5180, 5439, 5866, 5880, 6216, 6285, 6860, 7252, 7770, 8232, 8380, 8799, 9065, 10056, 10290, 10360, 10878, 11732, 12570, 12691, 13720, 14504, 14665, 15503, 15540, 16760, 17598, 18130, 20531, 20580, 21756, 23464, 25140, 25382, 27195, 29330, 31006, 31080, 35196, 36260, 38073, 41062, 41160, 43512, 43995, 46509, 50280, 50764, 54390, 58660, 61593, 62012, 63455, 70392, 72520, 76146, 77515, 82124, 87990, 93018, 101528, 102655, 108521, 108780, 117320, 123186, 124024, 126910, 143717, 152292, 155030, 164248, 175980, 186036, 190365, 205310, 217042, 217560, 232545, 246372, 253820, 287434, 304584, 307965, 310060, 325563, 351960, 372072, 380730, 410620, 431151, 434084, 465090, 492744, 507640, 542605, 574868, 615930, 620120, 651126, 718585, 759647, 761460, 821240, 862302, 868168, 930180, 1085210, 1149736, 1231860, 1302252, 1437170, 1519294, 1522920, 1627815, 1724604, 1860360, 2155755, 2170420, 2278941, 2463720, 2604504, 2874340, 3038588, 3255630, 3449208, 3798235, 4311510, 4340840, 4557882, 5317529, 5748680, 6077176, 6511260, 7596470, 8623020, 9115764, 10635058, 11394705, 13022520, 15192940, 15952587, 17246040, 18231528, 21270116, 22789410, 26587645, 30385880, 31905174, 42540232, 45578820, 53175290, 63810348, 79762935, 91157640, 106350580, 127620696, 159525870, 212701160, 319051740, 638103480]

約数ペア:

[(1, 638103480), (2, 319051740), (3, 212701160), (4, 159525870), (5, 127620696), (6, 106350580), (7, 91157640), (8, 79762935), (10, 63810348), (12, 53175290), (14, 45578820), (15, 42540232), (20, 31905174), (21, 30385880), (24, 26587645), (28, 22789410), (30, 21270116), (35, 18231528), (37, 17246040), (40, 15952587), (42, 15192940), (49, 13022520), (56, 11394705), (60, 10635058), (70, 9115764), (74, 8623020), (84, 7596470), (98, 6511260), (105, 6077176), (111, 5748680), (120, 5317529), (140, 4557882), (147, 4340840), (148, 4311510), (168, 3798235), (185, 3449208), (196, 3255630), (210, 3038588), (222, 2874340), (245, 2604504), (259, 2463720), (280, 2278941), (294, 2170420), (296, 2155755), (343, 1860360), (370, 1724604), (392, 1627815), (419, 1522920), (420, 1519294), (444, 1437170), (490, 1302252), (518, 1231860), (555, 1149736), (588, 1085210), (686, 930180), (735, 868168), (740, 862302), (777, 821240), (838, 761460), (840, 759647), (888, 718585), (980, 651126), (1029, 620120), (1036, 615930), (1110, 574868), (1176, 542605), (1257, 507640), (1295, 492744), (1372, 465090), (1470, 434084), (1480, 431151), (1554, 410620), (1676, 380730), (1715, 372072), (1813, 351960), (1960, 325563), (2058, 310060), (2072, 307965), (2095, 304584), (2220, 287434), (2514, 253820), (2590, 246372), (2744, 232545), (2933, 217560), (2940, 217042), (3108, 205310), (3352, 190365), (3430, 186036), (3626, 175980), (3885, 164248), (4116, 155030), (4190, 152292), (4440, 143717), (5028, 126910), (5145, 124024), (5180, 123186), (5439, 117320), (5866, 108780), (5880, 108521), (6216, 102655), (6285, 101528), (6860, 93018), (7252, 87990), (7770, 82124), (8232, 77515), (8380, 76146), (8799, 72520), (9065, 70392), (10056, 63455), (10290, 62012), (10360, 61593), (10878, 58660), (11732, 54390), (12570, 50764), (12691, 50280), (13720, 46509), (14504, 43995), (14665, 43512), (15503, 41160), (15540, 41062), (16760, 38073), (17598, 36260), (18130, 35196), (20531, 31080), (20580, 31006), (21756, 29330), (23464, 27195), (25140, 25382)]