21105590

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{313}}^1\times {\mathrm{613}}^1$

素因数の和:944

約数の個数: 32

約数和(自身を含む): 41643936

約数和(自身を除く): 20538346

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 313, 613, 626, 1226, 1565, 3065, 3130, 3443, 6130, 6743, 6886, 13486, 17215, 33715, 34430, 67430, 191869, 383738, 959345, 1918690, 2110559, 4221118, 10552795, 21105590]

約数ペア:

[(1, 21105590), (2, 10552795), (5, 4221118), (10, 2110559), (11, 1918690), (22, 959345), (55, 383738), (110, 191869), (313, 67430), (613, 34430), (626, 33715), (1226, 17215), (1565, 13486), (3065, 6886), (3130, 6743), (3443, 6130)]