2780180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{37}}^1$

素因数の和:93

約数の個数: 72

約数和(自身を含む): 6859608

約数和(自身を除く): 4079428

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 37, 52, 65, 68, 74, 85, 130, 148, 170, 185, 221, 260, 289, 340, 370, 442, 481, 578, 629, 740, 884, 962, 1105, 1156, 1258, 1445, 1924, 2210, 2405, 2516, 2890, 3145, 3757, 4420, 4810, 5780, 6290, 7514, 8177, 9620, 10693, 12580, 15028, 16354, 18785, 21386, 32708, 37570, 40885, 42772, 53465, 75140, 81770, 106930, 139009, 163540, 213860, 278018, 556036, 695045, 1390090, 2780180]

約数ペア:

[(1, 2780180), (2, 1390090), (4, 695045), (5, 556036), (10, 278018), (13, 213860), (17, 163540), (20, 139009), (26, 106930), (34, 81770), (37, 75140), (52, 53465), (65, 42772), (68, 40885), (74, 37570), (85, 32708), (130, 21386), (148, 18785), (170, 16354), (185, 15028), (221, 12580), (260, 10693), (289, 9620), (340, 8177), (370, 7514), (442, 6290), (481, 5780), (578, 4810), (629, 4420), (740, 3757), (884, 3145), (962, 2890), (1105, 2516), (1156, 2405), (1258, 2210), (1445, 1924)]