840222945

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{643849}}^1$

素因数の和:643889

約数の個数: 24

約数和(自身を含む): 1506609000

約数和(自身を除く): 666386055

約数列:

[1, 3, 5, 9, 15, 29, 45, 87, 145, 261, 435, 1305, 643849, 1931547, 3219245, 5794641, 9657735, 18671621, 28973205, 56014863, 93358105, 168044589, 280074315, 840222945]

約数ペア:

[(1, 840222945), (3, 280074315), (5, 168044589), (9, 93358105), (15, 56014863), (29, 28973205), (45, 18671621), (87, 9657735), (145, 5794641), (261, 3219245), (435, 1931547), (1305, 643849)]