21879490

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{433}}^1$

素因数の和:634

約数の個数: 32

約数和(自身を含む): 40997376

約数和(自身を除く): 19117886

約数列:

[1, 2, 5, 10, 31, 62, 155, 163, 310, 326, 433, 815, 866, 1630, 2165, 4330, 5053, 10106, 13423, 25265, 26846, 50530, 67115, 70579, 134230, 141158, 352895, 705790, 2187949, 4375898, 10939745, 21879490]

約数ペア:

[(1, 21879490), (2, 10939745), (5, 4375898), (10, 2187949), (31, 705790), (62, 352895), (155, 141158), (163, 134230), (310, 70579), (326, 67115), (433, 50530), (815, 26846), (866, 25265), (1630, 13423), (2165, 10106), (4330, 5053)]