1991619

素因数分解:

$3^2\times 7^1\times {\mathrm{101}}^1\times {\mathrm{313}}^1$

素因数の和:427

約数の個数: 24

約数和(自身を含む): 3330912

約数和(自身を除く): 1339293

約数列:

[1, 3, 7, 9, 21, 63, 101, 303, 313, 707, 909, 939, 2121, 2191, 2817, 6363, 6573, 19719, 31613, 94839, 221291, 284517, 663873, 1991619]

約数ペア:

[(1, 1991619), (3, 663873), (7, 284517), (9, 221291), (21, 94839), (63, 31613), (101, 19719), (303, 6573), (313, 6363), (707, 2817), (909, 2191), (939, 2121)]