128875420

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{222199}}^1$

素因数の和:222237

約数の個数: 24

約数和(自身を含む): 279972000

約数和(自身を除く): 151096580

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 222199, 444398, 888796, 1110995, 2221990, 4443980, 6443771, 12887542, 25775084, 32218855, 64437710, 128875420]

約数ペア:

[(1, 128875420), (2, 64437710), (4, 32218855), (5, 25775084), (10, 12887542), (20, 6443771), (29, 4443980), (58, 2221990), (116, 1110995), (145, 888796), (290, 444398), (580, 222199)]