21122915

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{5261}}^1$

素因数の和:5350

約数の個数: 16

約数和(自身を含む): 28035936

約数和(自身を除く): 6913021

約数列:

[1, 5, 11, 55, 73, 365, 803, 4015, 5261, 26305, 57871, 289355, 384053, 1920265, 4224583, 21122915]

約数ペア:

[(1, 21122915), (5, 4224583), (11, 1920265), (55, 384053), (73, 289355), (365, 57871), (803, 26305), (4015, 5261)]