21218115

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{34501}}^1$

素因数の和:34550

約数の個数: 16

約数和(自身を含む): 34778016

約数和(自身を除く): 13559901

約数列:

[1, 3, 5, 15, 41, 123, 205, 615, 34501, 103503, 172505, 517515, 1414541, 4243623, 7072705, 21218115]

約数ペア:

[(1, 21218115), (3, 7072705), (5, 4243623), (15, 1414541), (41, 517515), (123, 172505), (205, 103503), (615, 34501)]