978980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1579}}^1$

素因数の和:1619

約数の個数: 24

約数和(自身を含む): 2123520

約数和(自身を除く): 1144540

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 1579, 3158, 6316, 7895, 15790, 31580, 48949, 97898, 195796, 244745, 489490, 978980]

約数ペア:

[(1, 978980), (2, 489490), (4, 244745), (5, 195796), (10, 97898), (20, 48949), (31, 31580), (62, 15790), (124, 7895), (155, 6316), (310, 3158), (620, 1579)]