21211688

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{85531}}^1$

素因数の和:85568

約数の個数: 16

約数和(自身を含む): 41055360

約数和(自身を除く): 19843672

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 85531, 171062, 342124, 684248, 2651461, 5302922, 10605844, 21211688]

約数ペア:

[(1, 21211688), (2, 10605844), (4, 5302922), (8, 2651461), (31, 684248), (62, 342124), (124, 171062), (248, 85531)]