20436440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16481}}^1$

素因数の和:16523

約数の個数: 32

約数和(自身を含む): 47468160

約数和(自身を除く): 27031720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 16481, 32962, 65924, 82405, 131848, 164810, 329620, 510911, 659240, 1021822, 2043644, 2554555, 4087288, 5109110, 10218220, 20436440]

約数ペア:

[(1, 20436440), (2, 10218220), (4, 5109110), (5, 4087288), (8, 2554555), (10, 2043644), (20, 1021822), (31, 659240), (40, 510911), (62, 329620), (124, 164810), (155, 131848), (248, 82405), (310, 65924), (620, 32962), (1240, 16481)]