21981210

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{2851}}^1$

素因数の和:3118

約数の個数: 32

約数和(自身を含む): 52978752

約数和(自身を除く): 30997542

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 257, 514, 771, 1285, 1542, 2570, 2851, 3855, 5702, 7710, 8553, 14255, 17106, 28510, 42765, 85530, 732707, 1465414, 2198121, 3663535, 4396242, 7327070, 10990605, 21981210]

約数ペア:

[(1, 21981210), (2, 10990605), (3, 7327070), (5, 4396242), (6, 3663535), (10, 2198121), (15, 1465414), (30, 732707), (257, 85530), (514, 42765), (771, 28510), (1285, 17106), (1542, 14255), (2570, 8553), (2851, 7710), (3855, 5702)]