21712743

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{1229}}^1$

素因数の和:1399

約数の個数: 24

約数和(自身を含む): 34026720

約数和(自身を除く): 12313977

約数列:

[1, 3, 9, 13, 39, 117, 151, 453, 1229, 1359, 1963, 3687, 5889, 11061, 15977, 17667, 47931, 143793, 185579, 556737, 1670211, 2412527, 7237581, 21712743]

約数ペア:

[(1, 21712743), (3, 7237581), (9, 2412527), (13, 1670211), (39, 556737), (117, 185579), (151, 143793), (453, 47931), (1229, 17667), (1359, 15977), (1963, 11061), (3687, 5889)]