51515620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{347}}^1\times {\mathrm{571}}^1$

素因数の和:940

約数の個数: 48

約数和(自身を含む): 117044928

約数和(自身を除く): 65529308

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 347, 571, 694, 1142, 1388, 1735, 2284, 2855, 3470, 4511, 5710, 6940, 7423, 9022, 11420, 14846, 18044, 22555, 29692, 37115, 45110, 74230, 90220, 148460, 198137, 396274, 792548, 990685, 1981370, 2575781, 3962740, 5151562, 10303124, 12878905, 25757810, 51515620]

約数ペア:

[(1, 51515620), (2, 25757810), (4, 12878905), (5, 10303124), (10, 5151562), (13, 3962740), (20, 2575781), (26, 1981370), (52, 990685), (65, 792548), (130, 396274), (260, 198137), (347, 148460), (571, 90220), (694, 74230), (1142, 45110), (1388, 37115), (1735, 29692), (2284, 22555), (2855, 18044), (3470, 14846), (4511, 11420), (5710, 9022), (6940, 7423)]