18715940

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{30187}}^1$

素因数の和:30227

約数の個数: 24

約数和(自身を含む): 40572672

約数和(自身を除く): 21856732

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 30187, 60374, 120748, 150935, 301870, 603740, 935797, 1871594, 3743188, 4678985, 9357970, 18715940]

約数ペア:

[(1, 18715940), (2, 9357970), (4, 4678985), (5, 3743188), (10, 1871594), (20, 935797), (31, 603740), (62, 301870), (124, 150935), (155, 120748), (310, 60374), (620, 30187)]