28779660

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{251}}^1$

素因数の和:293

約数の個数: 216

約数和(自身を含む): 109798416

約数和(自身を除く): 81018756

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 28, 30, 35, 36, 39, 42, 45, 49, 52, 60, 63, 65, 70, 78, 84, 90, 91, 98, 105, 117, 126, 130, 140, 147, 156, 180, 182, 195, 196, 210, 234, 245, 251, 252, 260, 273, 294, 315, 364, 390, 420, 441, 455, 468, 490, 502, 546, 585, 588, 630, 637, 735, 753, 780, 819, 882, 910, 980, 1004, 1092, 1170, 1255, 1260, 1274, 1365, 1470, 1506, 1638, 1757, 1764, 1820, 1911, 2205, 2259, 2340, 2510, 2548, 2730, 2940, 3012, 3185, 3263, 3276, 3514, 3765, 3822, 4095, 4410, 4518, 5020, 5271, 5460, 5733, 6370, 6526, 7028, 7530, 7644, 8190, 8785, 8820, 9036, 9555, 9789, 10542, 11295, 11466, 12299, 12740, 13052, 15060, 15813, 16315, 16380, 17570, 19110, 19578, 21084, 22590, 22841, 22932, 24598, 26355, 28665, 29367, 31626, 32630, 35140, 36897, 38220, 39156, 45180, 45682, 48945, 49196, 52710, 57330, 58734, 61495, 63252, 65260, 68523, 73794, 79065, 91364, 97890, 105420, 110691, 114205, 114660, 117468, 122990, 137046, 146835, 147588, 158130, 159887, 184485, 195780, 205569, 221382, 228410, 245980, 274092, 293670, 316260, 319774, 342615, 368970, 411138, 442764, 456820, 479661, 553455, 587340, 639548, 685230, 737940, 799435, 822276, 959322, 1027845, 1106910, 1370460, 1438983, 1598870, 1918644, 2055690, 2213820, 2398305, 2877966, 3197740, 4111380, 4796610, 5755932, 7194915, 9593220, 14389830, 28779660]

約数ペア:

[(1, 28779660), (2, 14389830), (3, 9593220), (4, 7194915), (5, 5755932), (6, 4796610), (7, 4111380), (9, 3197740), (10, 2877966), (12, 2398305), (13, 2213820), (14, 2055690), (15, 1918644), (18, 1598870), (20, 1438983), (21, 1370460), (26, 1106910), (28, 1027845), (30, 959322), (35, 822276), (36, 799435), (39, 737940), (42, 685230), (45, 639548), (49, 587340), (52, 553455), (60, 479661), (63, 456820), (65, 442764), (70, 411138), (78, 368970), (84, 342615), (90, 319774), (91, 316260), (98, 293670), (105, 274092), (117, 245980), (126, 228410), (130, 221382), (140, 205569), (147, 195780), (156, 184485), (180, 159887), (182, 158130), (195, 147588), (196, 146835), (210, 137046), (234, 122990), (245, 117468), (251, 114660), (252, 114205), (260, 110691), (273, 105420), (294, 97890), (315, 91364), (364, 79065), (390, 73794), (420, 68523), (441, 65260), (455, 63252), (468, 61495), (490, 58734), (502, 57330), (546, 52710), (585, 49196), (588, 48945), (630, 45682), (637, 45180), (735, 39156), (753, 38220), (780, 36897), (819, 35140), (882, 32630), (910, 31626), (980, 29367), (1004, 28665), (1092, 26355), (1170, 24598), (1255, 22932), (1260, 22841), (1274, 22590), (1365, 21084), (1470, 19578), (1506, 19110), (1638, 17570), (1757, 16380), (1764, 16315), (1820, 15813), (1911, 15060), (2205, 13052), (2259, 12740), (2340, 12299), (2510, 11466), (2548, 11295), (2730, 10542), (2940, 9789), (3012, 9555), (3185, 9036), (3263, 8820), (3276, 8785), (3514, 8190), (3765, 7644), (3822, 7530), (4095, 7028), (4410, 6526), (4518, 6370), (5020, 5733), (5271, 5460)]