51601840

素因数分解:

$2^4\times 5^1\times {\mathrm{645023}}^1$

素因数の和:645036

約数の個数: 20

約数和(自身を含む): 119974464

約数和(自身を除く): 68372624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 645023, 1290046, 2580092, 3225115, 5160184, 6450230, 10320368, 12900460, 25800920, 51601840]

約数ペア:

[(1, 51601840), (2, 25800920), (4, 12900460), (5, 10320368), (8, 6450230), (10, 5160184), (16, 3225115), (20, 2580092), (40, 1290046), (80, 645023)]