21493615

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1307}}^1$

素因数の和:1359

約数の個数: 32

約数和(自身を含む): 31643136

約数和(自身を除く): 10149521

約数列:

[1, 5, 11, 13, 23, 55, 65, 115, 143, 253, 299, 715, 1265, 1307, 1495, 3289, 6535, 14377, 16445, 16991, 30061, 71885, 84955, 150305, 186901, 330671, 390793, 934505, 1653355, 1953965, 4298723, 21493615]

約数ペア:

[(1, 21493615), (5, 4298723), (11, 1953965), (13, 1653355), (23, 934505), (55, 390793), (65, 330671), (115, 186901), (143, 150305), (253, 84955), (299, 71885), (715, 30061), (1265, 16991), (1307, 16445), (1495, 14377), (3289, 6535)]