20705615

素因数分解:

$5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{307}}^1$

素因数の和:407

約数の個数: 32

約数和(自身を含む): 29804544

約数和(自身を除く): 9098929

約数列:

[1, 5, 7, 35, 41, 47, 205, 235, 287, 307, 329, 1435, 1535, 1645, 1927, 2149, 9635, 10745, 12587, 13489, 14429, 62935, 67445, 72145, 88109, 101003, 440545, 505015, 591589, 2957945, 4141123, 20705615]

約数ペア:

[(1, 20705615), (5, 4141123), (7, 2957945), (35, 591589), (41, 505015), (47, 440545), (205, 101003), (235, 88109), (287, 72145), (307, 67445), (329, 62935), (1435, 14429), (1535, 13489), (1645, 12587), (1927, 10745), (2149, 9635)]