21925915

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1$

素因数の和:259

約数の個数: 32

約数和(自身を含む): 30007296

約数和(自身を除く): 8081381

約数列:

[1, 5, 11, 43, 55, 73, 127, 215, 365, 473, 635, 803, 1397, 2365, 3139, 4015, 5461, 6985, 9271, 15695, 27305, 34529, 46355, 60071, 101981, 172645, 300355, 398653, 509905, 1993265, 4385183, 21925915]

約数ペア:

[(1, 21925915), (5, 4385183), (11, 1993265), (43, 509905), (55, 398653), (73, 300355), (127, 172645), (215, 101981), (365, 60071), (473, 46355), (635, 34529), (803, 27305), (1397, 15695), (2365, 9271), (3139, 6985), (4015, 5461)]