17988990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^2\times {\mathrm{31}}^1$

素因数の和:122

約数の個数: 96

約数和(自身を含む): 48162816

約数和(自身を除く): 30173826

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 29, 30, 31, 46, 58, 62, 69, 87, 93, 115, 138, 145, 155, 174, 186, 230, 290, 310, 345, 435, 465, 667, 690, 713, 841, 870, 899, 930, 1334, 1426, 1682, 1798, 2001, 2139, 2523, 2697, 3335, 3565, 4002, 4205, 4278, 4495, 5046, 5394, 6670, 7130, 8410, 8990, 10005, 10695, 12615, 13485, 19343, 20010, 20677, 21390, 25230, 26071, 26970, 38686, 41354, 52142, 58029, 62031, 78213, 96715, 103385, 116058, 124062, 130355, 156426, 193430, 206770, 260710, 290145, 310155, 391065, 580290, 599633, 620310, 782130, 1199266, 1798899, 2998165, 3597798, 5996330, 8994495, 17988990]

約数ペア:

[(1, 17988990), (2, 8994495), (3, 5996330), (5, 3597798), (6, 2998165), (10, 1798899), (15, 1199266), (23, 782130), (29, 620310), (30, 599633), (31, 580290), (46, 391065), (58, 310155), (62, 290145), (69, 260710), (87, 206770), (93, 193430), (115, 156426), (138, 130355), (145, 124062), (155, 116058), (174, 103385), (186, 96715), (230, 78213), (290, 62031), (310, 58029), (345, 52142), (435, 41354), (465, 38686), (667, 26970), (690, 26071), (713, 25230), (841, 21390), (870, 20677), (899, 20010), (930, 19343), (1334, 13485), (1426, 12615), (1682, 10695), (1798, 10005), (2001, 8990), (2139, 8410), (2523, 7130), (2697, 6670), (3335, 5394), (3565, 5046), (4002, 4495), (4205, 4278)]