21147478

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{14347}}^1$

素因数の和:14427

約数の個数: 16

約数和(自身を含む): 35123904

約数和(自身を除く): 13976426

約数列:

[1, 2, 11, 22, 67, 134, 737, 1474, 14347, 28694, 157817, 315634, 961249, 1922498, 10573739, 21147478]

約数ペア:

[(1, 21147478), (2, 10573739), (11, 1922498), (22, 961249), (67, 315634), (134, 157817), (737, 28694), (1474, 14347)]