21915220

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{9697}}^1$

素因数の和:9819

約数の個数: 24

約数和(自身を含む): 46434024

約数和(自身を除く): 24518804

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 9697, 19394, 38788, 48485, 96970, 193940, 1095761, 2191522, 4383044, 5478805, 10957610, 21915220]

約数ペア:

[(1, 21915220), (2, 10957610), (4, 5478805), (5, 4383044), (10, 2191522), (20, 1095761), (113, 193940), (226, 96970), (452, 48485), (565, 38788), (1130, 19394), (2260, 9697)]