890227961

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{617}}^1$

素因数の和:825

約数の個数: 32

約数和(自身を含む): 1078978560

約数和(自身を除く): 188750599

約数列:

[1, 7, 31, 61, 109, 217, 427, 617, 763, 1891, 3379, 4319, 6649, 13237, 19127, 23653, 37637, 46543, 67253, 133889, 206119, 263459, 470771, 1166747, 1442833, 2084843, 4102433, 8167229, 14593901, 28717031, 127175423, 890227961]

約数ペア:

[(1, 890227961), (7, 127175423), (31, 28717031), (61, 14593901), (109, 8167229), (217, 4102433), (427, 2084843), (617, 1442833), (763, 1166747), (1891, 470771), (3379, 263459), (4319, 206119), (6649, 133889), (13237, 67253), (19127, 46543), (23653, 37637)]