21870020

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{9677}}^1$

素因数の和:9799

約数の個数: 24

約数和(自身を含む): 46338264

約数和(自身を除く): 24468244

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 9677, 19354, 38708, 48385, 96770, 193540, 1093501, 2187002, 4374004, 5467505, 10935010, 21870020]

約数ペア:

[(1, 21870020), (2, 10935010), (4, 5467505), (5, 4374004), (10, 2187002), (20, 1093501), (113, 193540), (226, 96770), (452, 48385), (565, 38708), (1130, 19354), (2260, 9677)]