289209980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{203669}}^1$

素因数の和:203749

約数の個数: 24

約数和(自身を含む): 615898080

約数和(自身を除く): 326688100

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 203669, 407338, 814676, 1018345, 2036690, 4073380, 14460499, 28920998, 57841996, 72302495, 144604990, 289209980]

約数ペア:

[(1, 289209980), (2, 144604990), (4, 72302495), (5, 57841996), (10, 28920998), (20, 14460499), (71, 4073380), (142, 2036690), (284, 1018345), (355, 814676), (710, 407338), (1420, 203669)]