21928905

素因数分解:

$3^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{3557}}^1$

素因数の和:3705

約数の個数: 24

約数和(自身を含む): 38298312

約数和(自身を除く): 16369407

約数列:

[1, 3, 5, 9, 15, 45, 137, 411, 685, 1233, 2055, 3557, 6165, 10671, 17785, 32013, 53355, 160065, 487309, 1461927, 2436545, 4385781, 7309635, 21928905]

約数ペア:

[(1, 21928905), (3, 7309635), (5, 4385781), (9, 2436545), (15, 1461927), (45, 487309), (137, 160065), (411, 53355), (685, 32013), (1233, 17785), (2055, 10671), (3557, 6165)]