81628850

素因数分解:

$2^1\times 5^2\times {\mathrm{643}}^1\times {\mathrm{2539}}^1$

素因数の和:3194

約数の個数: 24

約数和(自身を含む): 152125680

約数和(自身を除く): 70496830

約数列:

[1, 2, 5, 10, 25, 50, 643, 1286, 2539, 3215, 5078, 6430, 12695, 16075, 25390, 32150, 63475, 126950, 1632577, 3265154, 8162885, 16325770, 40814425, 81628850]

約数ペア:

[(1, 81628850), (2, 40814425), (5, 16325770), (10, 8162885), (25, 3265154), (50, 1632577), (643, 126950), (1286, 63475), (2539, 32150), (3215, 25390), (5078, 16075), (6430, 12695)]