19979516

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{1291}}^1$

素因数の和:1421

約数の個数: 24

約数和(自身を含む): 36139824

約数和(自身を除く): 16160308

約数列:

[1, 2, 4, 53, 73, 106, 146, 212, 292, 1291, 2582, 3869, 5164, 7738, 15476, 68423, 94243, 136846, 188486, 273692, 376972, 4994879, 9989758, 19979516]

約数ペア:

[(1, 19979516), (2, 9989758), (4, 4994879), (53, 376972), (73, 273692), (106, 188486), (146, 136846), (212, 94243), (292, 68423), (1291, 15476), (2582, 7738), (3869, 5164)]