681560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1549}}^1$

素因数の和:1571

約数の個数: 32

約数和(自身を含む): 1674000

約数和(自身を除く): 992440

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 1549, 3098, 6196, 7745, 12392, 15490, 17039, 30980, 34078, 61960, 68156, 85195, 136312, 170390, 340780, 681560]

約数ペア:

[(1, 681560), (2, 340780), (4, 170390), (5, 136312), (8, 85195), (10, 68156), (11, 61960), (20, 34078), (22, 30980), (40, 17039), (44, 15490), (55, 12392), (88, 7745), (110, 6196), (220, 3098), (440, 1549)]