20994915

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{281}}^1\times {\mathrm{293}}^1$

素因数の和:599

約数の個数: 32

約数和(自身を含む): 35816256

約数和(自身を除く): 14821341

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 281, 293, 843, 879, 1405, 1465, 4215, 4395, 4777, 4981, 14331, 14943, 23885, 24905, 71655, 74715, 82333, 246999, 411665, 1234995, 1399661, 4198983, 6998305, 20994915]

約数ペア:

[(1, 20994915), (3, 6998305), (5, 4198983), (15, 1399661), (17, 1234995), (51, 411665), (85, 246999), (255, 82333), (281, 74715), (293, 71655), (843, 24905), (879, 23885), (1405, 14943), (1465, 14331), (4215, 4981), (4395, 4777)]