999880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{3571}}^1$

素因数の和:3589

約数の個数: 32

約数和(自身を含む): 2571840

約数和(自身を除く): 1571960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 3571, 7142, 14284, 17855, 24997, 28568, 35710, 49994, 71420, 99988, 124985, 142840, 199976, 249970, 499940, 999880]

約数ペア:

[(1, 999880), (2, 499940), (4, 249970), (5, 199976), (7, 142840), (8, 124985), (10, 99988), (14, 71420), (20, 49994), (28, 35710), (35, 28568), (40, 24997), (56, 17855), (70, 14284), (140, 7142), (280, 3571)]