21312440

素因数分解:

$2^3\times 5^1\times {\mathrm{532811}}^1$

素因数の和:532822

約数の個数: 16

約数和(自身を含む): 47953080

約数和(自身を除く): 26640640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 532811, 1065622, 2131244, 2664055, 4262488, 5328110, 10656220, 21312440]

約数ペア:

[(1, 21312440), (2, 10656220), (4, 5328110), (5, 4262488), (8, 2664055), (10, 2131244), (20, 1065622), (40, 532811)]