21248950

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{13709}}^1$

素因数の和:13752

約数の個数: 24

約数和(自身を含む): 40800960

約数和(自身を除く): 19552010

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 155, 310, 775, 1550, 13709, 27418, 68545, 137090, 342725, 424979, 685450, 849958, 2124895, 4249790, 10624475, 21248950]

約数ペア:

[(1, 21248950), (2, 10624475), (5, 4249790), (10, 2124895), (25, 849958), (31, 685450), (50, 424979), (62, 342725), (155, 137090), (310, 68545), (775, 27418), (1550, 13709)]