20854940

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{33637}}^1$

素因数の和:33677

約数の個数: 24

約数和(自身を含む): 45209472

約数和(自身を除く): 24354532

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 33637, 67274, 134548, 168185, 336370, 672740, 1042747, 2085494, 4170988, 5213735, 10427470, 20854940]

約数ペア:

[(1, 20854940), (2, 10427470), (4, 5213735), (5, 4170988), (10, 2085494), (20, 1042747), (31, 672740), (62, 336370), (124, 168185), (155, 134548), (310, 67274), (620, 33637)]