31275140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{487}}^1$

素因数の和:541

約数の個数: 72

約数和(自身を含む): 75015360

約数和(自身を除く): 43740220

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 169, 190, 247, 260, 338, 380, 487, 494, 676, 845, 974, 988, 1235, 1690, 1948, 2435, 2470, 3211, 3380, 4870, 4940, 6331, 6422, 9253, 9740, 12662, 12844, 16055, 18506, 25324, 31655, 32110, 37012, 46265, 63310, 64220, 82303, 92530, 120289, 126620, 164606, 185060, 240578, 329212, 411515, 481156, 601445, 823030, 1202890, 1563757, 1646060, 2405780, 3127514, 6255028, 7818785, 15637570, 31275140]

約数ペア:

[(1, 31275140), (2, 15637570), (4, 7818785), (5, 6255028), (10, 3127514), (13, 2405780), (19, 1646060), (20, 1563757), (26, 1202890), (38, 823030), (52, 601445), (65, 481156), (76, 411515), (95, 329212), (130, 240578), (169, 185060), (190, 164606), (247, 126620), (260, 120289), (338, 92530), (380, 82303), (487, 64220), (494, 63310), (676, 46265), (845, 37012), (974, 32110), (988, 31655), (1235, 25324), (1690, 18506), (1948, 16055), (2435, 12844), (2470, 12662), (3211, 9740), (3380, 9253), (4870, 6422), (4940, 6331)]