21543977

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1091}}^1$

素因数の和:1149

約数の個数: 24

約数和(自身を含む): 27885312

約数和(自身を除く): 6341335

約数列:

[1, 7, 13, 31, 49, 91, 217, 403, 637, 1091, 1519, 2821, 7637, 14183, 19747, 33821, 53459, 99281, 236747, 439673, 694967, 1657229, 3077711, 21543977]

約数ペア:

[(1, 21543977), (7, 3077711), (13, 1657229), (31, 694967), (49, 439673), (91, 236747), (217, 99281), (403, 53459), (637, 33821), (1091, 19747), (1519, 14183), (2821, 7637)]