25801840

素因数分解:

$2^4\times 5^1\times {\mathrm{322523}}^1$

素因数の和:322536

約数の個数: 20

約数和(自身を含む): 59989464

約数和(自身を除く): 34187624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 322523, 645046, 1290092, 1612615, 2580184, 3225230, 5160368, 6450460, 12900920, 25801840]

約数ペア:

[(1, 25801840), (2, 12900920), (4, 6450460), (5, 5160368), (8, 3225230), (10, 2580184), (16, 1612615), (20, 1290092), (40, 645046), (80, 322523)]