31881020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{51421}}^1$

素因数の和:51461

約数の個数: 24

約数和(自身を含む): 69111168

約数和(自身を除く): 37230148

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 51421, 102842, 205684, 257105, 514210, 1028420, 1594051, 3188102, 6376204, 7970255, 15940510, 31881020]

約数ペア:

[(1, 31881020), (2, 15940510), (4, 7970255), (5, 6376204), (10, 3188102), (20, 1594051), (31, 1028420), (62, 514210), (124, 257105), (155, 205684), (310, 102842), (620, 51421)]