21921380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{84313}}^1$

素因数の和:84335

約数の個数: 24

約数和(自身を含む): 49576632

約数和(自身を除く): 27655252

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 84313, 168626, 337252, 421565, 843130, 1096069, 1686260, 2192138, 4384276, 5480345, 10960690, 21921380]

約数ペア:

[(1, 21921380), (2, 10960690), (4, 5480345), (5, 4384276), (10, 2192138), (13, 1686260), (20, 1096069), (26, 843130), (52, 421565), (65, 337252), (130, 168626), (260, 84313)]