21660195

素因数分解:

$3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1\times {\mathrm{151}}^1$

素因数の和:363

約数の個数: 32

約数和(自身を含む): 35633664

約数和(自身を除く): 13973469

約数列:

[1, 3, 5, 15, 73, 131, 151, 219, 365, 393, 453, 655, 755, 1095, 1965, 2265, 9563, 11023, 19781, 28689, 33069, 47815, 55115, 59343, 98905, 143445, 165345, 296715, 1444013, 4332039, 7220065, 21660195]

約数ペア:

[(1, 21660195), (3, 7220065), (5, 4332039), (15, 1444013), (73, 296715), (131, 165345), (151, 143445), (219, 98905), (365, 59343), (393, 55115), (453, 47815), (655, 33069), (755, 28689), (1095, 19781), (1965, 11023), (2265, 9563)]