638974790

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2061209}}^1$

素因数の和:2061247

約数の個数: 16

約数和(自身を含む): 1187256960

約数和(自身を除く): 548282170

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 2061209, 4122418, 10306045, 20612090, 63897479, 127794958, 319487395, 638974790]

約数ペア:

[(1, 638974790), (2, 319487395), (5, 127794958), (10, 63897479), (31, 20612090), (62, 10306045), (155, 4122418), (310, 2061209)]