21091620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31957}}^1$

素因数の和:31980

約数の個数: 48

約数和(自身を含む): 64427328

約数和(自身を除く): 43335708

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660, 31957, 63914, 95871, 127828, 159785, 191742, 319570, 351527, 383484, 479355, 639140, 703054, 958710, 1054581, 1406108, 1757635, 1917420, 2109162, 3515270, 4218324, 5272905, 7030540, 10545810, 21091620]

約数ペア:

[(1, 21091620), (2, 10545810), (3, 7030540), (4, 5272905), (5, 4218324), (6, 3515270), (10, 2109162), (11, 1917420), (12, 1757635), (15, 1406108), (20, 1054581), (22, 958710), (30, 703054), (33, 639140), (44, 479355), (55, 383484), (60, 351527), (66, 319570), (110, 191742), (132, 159785), (165, 127828), (220, 95871), (330, 63914), (660, 31957)]