64501040

素因数分解:

$2^4\times 5^1\times {\mathrm{806263}}^1$

素因数の和:806276

約数の個数: 20

約数和(自身を含む): 149965104

約数和(自身を除く): 85464064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 806263, 1612526, 3225052, 4031315, 6450104, 8062630, 12900208, 16125260, 32250520, 64501040]

約数ペア:

[(1, 64501040), (2, 32250520), (4, 16125260), (5, 12900208), (8, 8062630), (10, 6450104), (16, 4031315), (20, 3225052), (40, 1612526), (80, 806263)]