21066765

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{151}}^1$

素因数の和:361

約数の個数: 32

約数和(自身を含む): 34670592

約数和(自身を除く): 13603827

約数列:

[1, 3, 5, 15, 71, 131, 151, 213, 355, 393, 453, 655, 755, 1065, 1965, 2265, 9301, 10721, 19781, 27903, 32163, 46505, 53605, 59343, 98905, 139515, 160815, 296715, 1404451, 4213353, 7022255, 21066765]

約数ペア:

[(1, 21066765), (3, 7022255), (5, 4213353), (15, 1404451), (71, 296715), (131, 160815), (151, 139515), (213, 98905), (355, 59343), (393, 53605), (453, 46505), (655, 32163), (755, 27903), (1065, 19781), (1965, 10721), (2265, 9301)]