81120360

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1$

素因数の和:335

約数の個数: 128

約数和(自身を含む): 253440000

約数和(自身を除く): 172319640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 43, 60, 79, 86, 120, 129, 158, 172, 199, 215, 237, 258, 316, 344, 395, 398, 430, 474, 516, 597, 632, 645, 790, 796, 860, 948, 995, 1032, 1185, 1194, 1290, 1580, 1592, 1720, 1896, 1990, 2370, 2388, 2580, 2985, 3160, 3397, 3980, 4740, 4776, 5160, 5970, 6794, 7960, 8557, 9480, 10191, 11940, 13588, 15721, 16985, 17114, 20382, 23880, 25671, 27176, 31442, 33970, 34228, 40764, 42785, 47163, 50955, 51342, 62884, 67940, 68456, 78605, 81528, 85570, 94326, 101910, 102684, 125768, 128355, 135880, 157210, 171140, 188652, 203820, 205368, 235815, 256710, 314420, 342280, 377304, 407640, 471630, 513420, 628840, 676003, 943260, 1026840, 1352006, 1886520, 2028009, 2704012, 3380015, 4056018, 5408024, 6760030, 8112036, 10140045, 13520060, 16224072, 20280090, 27040120, 40560180, 81120360]

約数ペア:

[(1, 81120360), (2, 40560180), (3, 27040120), (4, 20280090), (5, 16224072), (6, 13520060), (8, 10140045), (10, 8112036), (12, 6760030), (15, 5408024), (20, 4056018), (24, 3380015), (30, 2704012), (40, 2028009), (43, 1886520), (60, 1352006), (79, 1026840), (86, 943260), (120, 676003), (129, 628840), (158, 513420), (172, 471630), (199, 407640), (215, 377304), (237, 342280), (258, 314420), (316, 256710), (344, 235815), (395, 205368), (398, 203820), (430, 188652), (474, 171140), (516, 157210), (597, 135880), (632, 128355), (645, 125768), (790, 102684), (796, 101910), (860, 94326), (948, 85570), (995, 81528), (1032, 78605), (1185, 68456), (1194, 67940), (1290, 62884), (1580, 51342), (1592, 50955), (1720, 47163), (1896, 42785), (1990, 40764), (2370, 34228), (2388, 33970), (2580, 31442), (2985, 27176), (3160, 25671), (3397, 23880), (3980, 20382), (4740, 17114), (4776, 16985), (5160, 15721), (5970, 13588), (6794, 11940), (7960, 10191), (8557, 9480)]