18865847

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{401}}^1$

素因数の和:479

約数の個数: 32

約数和(自身を含む): 25933824

約数和(自身を除く): 7067977

約数列:

[1, 7, 11, 13, 47, 77, 91, 143, 329, 401, 517, 611, 1001, 2807, 3619, 4277, 4411, 5213, 6721, 18847, 30877, 36491, 47047, 57343, 131929, 207317, 245011, 401401, 1451219, 1715077, 2695121, 18865847]

約数ペア:

[(1, 18865847), (7, 2695121), (11, 1715077), (13, 1451219), (47, 401401), (77, 245011), (91, 207317), (143, 131929), (329, 57343), (401, 47047), (517, 36491), (611, 30877), (1001, 18847), (2807, 6721), (3619, 5213), (4277, 4411)]