21464920

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{7351}}^1$

素因数の和:7435

約数の個数: 32

約数和(自身を含む): 48964320

約数和(自身を除く): 27499400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 7351, 14702, 29404, 36755, 58808, 73510, 147020, 294040, 536623, 1073246, 2146492, 2683115, 4292984, 5366230, 10732460, 21464920]

約数ペア:

[(1, 21464920), (2, 10732460), (4, 5366230), (5, 4292984), (8, 2683115), (10, 2146492), (20, 1073246), (40, 536623), (73, 294040), (146, 147020), (292, 73510), (365, 58808), (584, 36755), (730, 29404), (1460, 14702), (2920, 7351)]