20709657

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{173}}^1\times {\mathrm{283}}^1$

素因数の和:509

約数の個数: 24

約数和(自身を含む): 30835584

約数和(自身を除く): 10125927

約数列:

[1, 3, 9, 47, 141, 173, 283, 423, 519, 849, 1557, 2547, 8131, 13301, 24393, 39903, 48959, 73179, 119709, 146877, 440631, 2301073, 6903219, 20709657]

約数ペア:

[(1, 20709657), (3, 6903219), (9, 2301073), (47, 440631), (141, 146877), (173, 119709), (283, 73179), (423, 48959), (519, 39903), (849, 24393), (1557, 13301), (2547, 8131)]