866046760

素因数分解:

$2^3\times 5^1\times {\mathrm{1999}}^1\times {\mathrm{10831}}^1$

素因数の和:12841

約数の個数: 32

約数和(自身を含む): 1949760000

約数和(自身を除く): 1083713240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1999, 3998, 7996, 9995, 10831, 15992, 19990, 21662, 39980, 43324, 54155, 79960, 86648, 108310, 216620, 433240, 21651169, 43302338, 86604676, 108255845, 173209352, 216511690, 433023380, 866046760]

約数ペア:

[(1, 866046760), (2, 433023380), (4, 216511690), (5, 173209352), (8, 108255845), (10, 86604676), (20, 43302338), (40, 21651169), (1999, 433240), (3998, 216620), (7996, 108310), (9995, 86648), (10831, 79960), (15992, 54155), (19990, 43324), (21662, 39980)]