20951620

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{1231}}^1$

素因数の和:1300

約数の個数: 48

約数和(自身を含む): 47190528

約数和(自身を除く): 26238908

約数列:

[1, 2, 4, 5, 10, 20, 23, 37, 46, 74, 92, 115, 148, 185, 230, 370, 460, 740, 851, 1231, 1702, 2462, 3404, 4255, 4924, 6155, 8510, 12310, 17020, 24620, 28313, 45547, 56626, 91094, 113252, 141565, 182188, 227735, 283130, 455470, 566260, 910940, 1047581, 2095162, 4190324, 5237905, 10475810, 20951620]

約数ペア:

[(1, 20951620), (2, 10475810), (4, 5237905), (5, 4190324), (10, 2095162), (20, 1047581), (23, 910940), (37, 566260), (46, 455470), (74, 283130), (92, 227735), (115, 182188), (148, 141565), (185, 113252), (230, 91094), (370, 56626), (460, 45547), (740, 28313), (851, 24620), (1231, 17020), (1702, 12310), (2462, 8510), (3404, 6155), (4255, 4924)]