209919619

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{317}}^1\times {\mathrm{383}}^1$

素因数の和:739

約数の個数: 32

約数和(自身を含む): 273530880

約数和(自身を除く): 63611261

約数列:

[1, 7, 13, 19, 91, 133, 247, 317, 383, 1729, 2219, 2681, 4121, 4979, 6023, 7277, 28847, 34853, 42161, 50939, 78299, 94601, 121411, 548093, 662207, 849877, 1578343, 2306809, 11048401, 16147663, 29988517, 209919619]

約数ペア:

[(1, 209919619), (7, 29988517), (13, 16147663), (19, 11048401), (91, 2306809), (133, 1578343), (247, 849877), (317, 662207), (383, 548093), (1729, 121411), (2219, 94601), (2681, 78299), (4121, 50939), (4979, 42161), (6023, 34853), (7277, 28847)]