21478620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{357977}}^1$

素因数の和:357989

約数の個数: 24

約数和(自身を含む): 60140304

約数和(自身を除く): 38661684

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 357977, 715954, 1073931, 1431908, 1789885, 2147862, 3579770, 4295724, 5369655, 7159540, 10739310, 21478620]

約数ペア:

[(1, 21478620), (2, 10739310), (3, 7159540), (4, 5369655), (5, 4295724), (6, 3579770), (10, 2147862), (12, 1789885), (15, 1431908), (20, 1073931), (30, 715954), (60, 357977)]