21652215

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{3001}}^1$

素因数の和:3059

約数の個数: 32

約数和(自身を含む): 38329536

約数和(自身を除く): 16677321

約数列:

[1, 3, 5, 13, 15, 37, 39, 65, 111, 185, 195, 481, 555, 1443, 2405, 3001, 7215, 9003, 15005, 39013, 45015, 111037, 117039, 195065, 333111, 555185, 585195, 1443481, 1665555, 4330443, 7217405, 21652215]

約数ペア:

[(1, 21652215), (3, 7217405), (5, 4330443), (13, 1665555), (15, 1443481), (37, 585195), (39, 555185), (65, 333111), (111, 195065), (185, 117039), (195, 111037), (481, 45015), (555, 39013), (1443, 15005), (2405, 9003), (3001, 7215)]