28177060

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19843}}^1$

素因数の和:19923

約数の個数: 24

約数和(自身を含む): 60008256

約数和(自身を除く): 31831196

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 19843, 39686, 79372, 99215, 198430, 396860, 1408853, 2817706, 5635412, 7044265, 14088530, 28177060]

約数ペア:

[(1, 28177060), (2, 14088530), (4, 7044265), (5, 5635412), (10, 2817706), (20, 1408853), (71, 396860), (142, 198430), (284, 99215), (355, 79372), (710, 39686), (1420, 19843)]