21879920

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{9431}}^1$

素因数の和:9473

約数の個数: 40

約数和(自身を含む): 52630560

約数和(自身を除く): 30750640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 9431, 18862, 37724, 47155, 75448, 94310, 150896, 188620, 273499, 377240, 546998, 754480, 1093996, 1367495, 2187992, 2734990, 4375984, 5469980, 10939960, 21879920]

約数ペア:

[(1, 21879920), (2, 10939960), (4, 5469980), (5, 4375984), (8, 2734990), (10, 2187992), (16, 1367495), (20, 1093996), (29, 754480), (40, 546998), (58, 377240), (80, 273499), (116, 188620), (145, 150896), (232, 94310), (290, 75448), (464, 47155), (580, 37724), (1160, 18862), (2320, 9431)]