81610540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{21821}}^1$

素因数の和:21858

約数の個数: 48

約数和(自身を含む): 197969184

約数和(自身を除く): 116358644

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 748, 935, 1870, 3740, 21821, 43642, 87284, 109105, 218210, 240031, 370957, 436420, 480062, 741914, 960124, 1200155, 1483828, 1854785, 2400310, 3709570, 4080527, 4800620, 7419140, 8161054, 16322108, 20402635, 40805270, 81610540]

約数ペア:

[(1, 81610540), (2, 40805270), (4, 20402635), (5, 16322108), (10, 8161054), (11, 7419140), (17, 4800620), (20, 4080527), (22, 3709570), (34, 2400310), (44, 1854785), (55, 1483828), (68, 1200155), (85, 960124), (110, 741914), (170, 480062), (187, 436420), (220, 370957), (340, 240031), (374, 218210), (748, 109105), (935, 87284), (1870, 43642), (3740, 21821)]