21287430

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{236527}}^1$

素因数の和:236540

約数の個数: 24

約数和(自身を含む): 55347552

約数和(自身を除く): 34060122

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 236527, 473054, 709581, 1182635, 1419162, 2128743, 2365270, 3547905, 4257486, 7095810, 10643715, 21287430]

約数ペア:

[(1, 21287430), (2, 10643715), (3, 7095810), (5, 4257486), (6, 3547905), (9, 2365270), (10, 2128743), (15, 1419162), (18, 1182635), (30, 709581), (45, 473054), (90, 236527)]