21831723

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{293}}^1\times {\mathrm{487}}^1$

素因数の和:803

約数の個数: 24

約数和(自身を含む): 33572448

約数和(自身を除く): 11740725

約数列:

[1, 3, 9, 17, 51, 153, 293, 487, 879, 1461, 2637, 4383, 4981, 8279, 14943, 24837, 44829, 74511, 142691, 428073, 1284219, 2425747, 7277241, 21831723]

約数ペア:

[(1, 21831723), (3, 7277241), (9, 2425747), (17, 1284219), (51, 428073), (153, 142691), (293, 74511), (487, 44829), (879, 24837), (1461, 14943), (2637, 8279), (4383, 4981)]