21165404

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{2971}}^1$

素因数の和:3125

約数の個数: 24

約数和(自身を含む): 40193328

約数和(自身を除く): 19027924

約数列:

[1, 2, 4, 13, 26, 52, 137, 274, 548, 1781, 2971, 3562, 5942, 7124, 11884, 38623, 77246, 154492, 407027, 814054, 1628108, 5291351, 10582702, 21165404]

約数ペア:

[(1, 21165404), (2, 10582702), (4, 5291351), (13, 1628108), (26, 814054), (52, 407027), (137, 154492), (274, 77246), (548, 38623), (1781, 11884), (2971, 7124), (3562, 5942)]