21682860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{929}}^1$

素因数の和:1330

約数の個数: 48

約数和(自身を含む): 60933600

約数和(自身を除く): 39250740

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 389, 778, 929, 1167, 1556, 1858, 1945, 2334, 2787, 3716, 3890, 4645, 4668, 5574, 5835, 7780, 9290, 11148, 11670, 13935, 18580, 23340, 27870, 55740, 361381, 722762, 1084143, 1445524, 1806905, 2168286, 3613810, 4336572, 5420715, 7227620, 10841430, 21682860]

約数ペア:

[(1, 21682860), (2, 10841430), (3, 7227620), (4, 5420715), (5, 4336572), (6, 3613810), (10, 2168286), (12, 1806905), (15, 1445524), (20, 1084143), (30, 722762), (60, 361381), (389, 55740), (778, 27870), (929, 23340), (1167, 18580), (1556, 13935), (1858, 11670), (1945, 11148), (2334, 9290), (2787, 7780), (3716, 5835), (3890, 5574), (4645, 4668)]