20895855

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{557}}^1$

素因数の和:667

約数の個数: 32

約数和(自身を含む): 34872768

約数和(自身を除く): 13976913

約数列:

[1, 3, 5, 15, 41, 61, 123, 183, 205, 305, 557, 615, 915, 1671, 2501, 2785, 7503, 8355, 12505, 22837, 33977, 37515, 68511, 101931, 114185, 169885, 342555, 509655, 1393057, 4179171, 6965285, 20895855]

約数ペア:

[(1, 20895855), (3, 6965285), (5, 4179171), (15, 1393057), (41, 509655), (61, 342555), (123, 169885), (183, 114185), (205, 101931), (305, 68511), (557, 37515), (615, 33977), (915, 22837), (1671, 12505), (2501, 8355), (2785, 7503)]