21865290

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{728843}}^1$

素因数の和:728853

約数の個数: 16

約数和(自身を含む): 52476768

約数和(自身を除く): 30611478

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 728843, 1457686, 2186529, 3644215, 4373058, 7288430, 10932645, 21865290]

約数ペア:

[(1, 21865290), (2, 10932645), (3, 7288430), (5, 4373058), (6, 3644215), (10, 2186529), (15, 1457686), (30, 728843)]