211677851

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{191}}^1\times {\mathrm{389}}^1$

素因数の和:635

約数の個数: 32

約数和(自身を含む): 273162240

約数和(自身を除く): 61484389

約数列:

[1, 7, 11, 37, 77, 191, 259, 389, 407, 1337, 2101, 2723, 2849, 4279, 7067, 14393, 14707, 29953, 49469, 74299, 77737, 100751, 158323, 520093, 544159, 817289, 1108261, 2749063, 5721023, 19243441, 30239693, 211677851]

約数ペア:

[(1, 211677851), (7, 30239693), (11, 19243441), (37, 5721023), (77, 2749063), (191, 1108261), (259, 817289), (389, 544159), (407, 520093), (1337, 158323), (2101, 100751), (2723, 77737), (2849, 74299), (4279, 49469), (7067, 29953), (14393, 14707)]