20663640

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{53}}^1$

素因数の和:111

約数の個数: 192

約数和(自身を含む): 74066400

約数和(自身を除く): 53402760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 53, 54, 57, 60, 72, 76, 90, 95, 106, 108, 114, 120, 135, 152, 159, 171, 180, 190, 212, 216, 228, 265, 270, 285, 318, 342, 360, 361, 380, 424, 456, 477, 513, 530, 540, 570, 636, 684, 722, 760, 795, 855, 954, 1007, 1026, 1060, 1080, 1083, 1140, 1272, 1368, 1431, 1444, 1590, 1710, 1805, 1908, 2014, 2052, 2120, 2166, 2280, 2385, 2565, 2862, 2888, 3021, 3180, 3249, 3420, 3610, 3816, 4028, 4104, 4332, 4770, 5035, 5130, 5415, 5724, 6042, 6360, 6498, 6840, 7155, 7220, 8056, 8664, 9063, 9540, 9747, 10070, 10260, 10830, 11448, 12084, 12996, 14310, 14440, 15105, 16245, 18126, 19080, 19133, 19494, 20140, 20520, 21660, 24168, 25992, 27189, 28620, 30210, 32490, 36252, 38266, 38988, 40280, 43320, 45315, 48735, 54378, 57240, 57399, 60420, 64980, 72504, 76532, 77976, 90630, 95665, 97470, 108756, 114798, 120840, 129960, 135945, 153064, 172197, 181260, 191330, 194940, 217512, 229596, 271890, 286995, 344394, 362520, 382660, 389880, 459192, 516591, 543780, 573990, 688788, 765320, 860985, 1033182, 1087560, 1147980, 1377576, 1721970, 2066364, 2295960, 2582955, 3443940, 4132728, 5165910, 6887880, 10331820, 20663640]

約数ペア:

[(1, 20663640), (2, 10331820), (3, 6887880), (4, 5165910), (5, 4132728), (6, 3443940), (8, 2582955), (9, 2295960), (10, 2066364), (12, 1721970), (15, 1377576), (18, 1147980), (19, 1087560), (20, 1033182), (24, 860985), (27, 765320), (30, 688788), (36, 573990), (38, 543780), (40, 516591), (45, 459192), (53, 389880), (54, 382660), (57, 362520), (60, 344394), (72, 286995), (76, 271890), (90, 229596), (95, 217512), (106, 194940), (108, 191330), (114, 181260), (120, 172197), (135, 153064), (152, 135945), (159, 129960), (171, 120840), (180, 114798), (190, 108756), (212, 97470), (216, 95665), (228, 90630), (265, 77976), (270, 76532), (285, 72504), (318, 64980), (342, 60420), (360, 57399), (361, 57240), (380, 54378), (424, 48735), (456, 45315), (477, 43320), (513, 40280), (530, 38988), (540, 38266), (570, 36252), (636, 32490), (684, 30210), (722, 28620), (760, 27189), (795, 25992), (855, 24168), (954, 21660), (1007, 20520), (1026, 20140), (1060, 19494), (1080, 19133), (1083, 19080), (1140, 18126), (1272, 16245), (1368, 15105), (1431, 14440), (1444, 14310), (1590, 12996), (1710, 12084), (1805, 11448), (1908, 10830), (2014, 10260), (2052, 10070), (2120, 9747), (2166, 9540), (2280, 9063), (2385, 8664), (2565, 8056), (2862, 7220), (2888, 7155), (3021, 6840), (3180, 6498), (3249, 6360), (3420, 6042), (3610, 5724), (3816, 5415), (4028, 5130), (4104, 5035), (4332, 4770)]