21003195

素因数分解:

$3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{19181}}^1$

素因数の和:19262

約数の個数: 16

約数和(自身を含む): 34067232

約数和(自身を除く): 13064037

約数列:

[1, 3, 5, 15, 73, 219, 365, 1095, 19181, 57543, 95905, 287715, 1400213, 4200639, 7001065, 21003195]

約数ペア:

[(1, 21003195), (3, 7001065), (5, 4200639), (15, 1400213), (73, 287715), (219, 95905), (365, 57543), (1095, 19181)]