21142515

素因数分解:

$3^1\times 5^1\times {\mathrm{379}}^1\times {\mathrm{3719}}^1$

素因数の和:4106

約数の個数: 16

約数和(自身を含む): 33926400

約数和(自身を除く): 12783885

約数列:

[1, 3, 5, 15, 379, 1137, 1895, 3719, 5685, 11157, 18595, 55785, 1409501, 4228503, 7047505, 21142515]

約数ペア:

[(1, 21142515), (3, 7047505), (5, 4228503), (15, 1409501), (379, 55785), (1137, 18595), (1895, 11157), (3719, 5685)]