87404980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{379}}^1\times {\mathrm{887}}^1$

素因数の和:1288

約数の個数: 48

約数和(自身を含む): 198414720

約数和(自身を除く): 111009740

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 379, 758, 887, 1516, 1774, 1895, 3548, 3790, 4435, 4927, 7580, 8870, 9854, 11531, 17740, 19708, 23062, 24635, 46124, 49270, 57655, 98540, 115310, 230620, 336173, 672346, 1344692, 1680865, 3361730, 4370249, 6723460, 8740498, 17480996, 21851245, 43702490, 87404980]

約数ペア:

[(1, 87404980), (2, 43702490), (4, 21851245), (5, 17480996), (10, 8740498), (13, 6723460), (20, 4370249), (26, 3361730), (52, 1680865), (65, 1344692), (130, 672346), (260, 336173), (379, 230620), (758, 115310), (887, 98540), (1516, 57655), (1774, 49270), (1895, 46124), (3548, 24635), (3790, 23062), (4435, 19708), (4927, 17740), (7580, 11531), (8870, 9854)]