21554920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{17383}}^1$

素因数の和:17425

約数の個数: 32

約数和(自身を含む): 50065920

約数和(自身を除く): 28511000

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 17383, 34766, 69532, 86915, 139064, 173830, 347660, 538873, 695320, 1077746, 2155492, 2694365, 4310984, 5388730, 10777460, 21554920]

約数ペア:

[(1, 21554920), (2, 10777460), (4, 5388730), (5, 4310984), (8, 2694365), (10, 2155492), (20, 1077746), (31, 695320), (40, 538873), (62, 347660), (124, 173830), (155, 139064), (248, 86915), (310, 69532), (620, 34766), (1240, 17383)]