21478197

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{10391}}^1$

素因数の和:10460

約数の個数: 16

約数和(自身を含む): 31425408

約数和(自身を除く): 9947211

約数列:

[1, 3, 13, 39, 53, 159, 689, 2067, 10391, 31173, 135083, 405249, 550723, 1652169, 7159399, 21478197]

約数ペア:

[(1, 21478197), (3, 7159399), (13, 1652169), (39, 550723), (53, 405249), (159, 135083), (689, 31173), (2067, 10391)]