15561741

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{21001}}^1$

素因数の和:21036

約数の個数: 16

約数和(自身を含む): 23522240

約数和(自身を除く): 7960499

約数列:

[1, 3, 13, 19, 39, 57, 247, 741, 21001, 63003, 273013, 399019, 819039, 1197057, 5187247, 15561741]

約数ペア:

[(1, 15561741), (3, 5187247), (13, 1197057), (19, 819039), (39, 399019), (57, 273013), (247, 63003), (741, 21001)]