21372020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{34471}}^1$

素因数の和:34511

約数の個数: 24

約数和(自身を含む): 46330368

約数和(自身を除く): 24958348

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 34471, 68942, 137884, 172355, 344710, 689420, 1068601, 2137202, 4274404, 5343005, 10686010, 21372020]

約数ペア:

[(1, 21372020), (2, 10686010), (4, 5343005), (5, 4274404), (10, 2137202), (20, 1068601), (31, 689420), (62, 344710), (124, 172355), (155, 137884), (310, 68942), (620, 34471)]