51345040

素因数分解:

$2^4\times 5^1\times {\mathrm{641813}}^1$

素因数の和:641826

約数の個数: 20

約数和(自身を含む): 119377404

約数和(自身を除く): 68032364

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 641813, 1283626, 2567252, 3209065, 5134504, 6418130, 10269008, 12836260, 25672520, 51345040]

約数ペア:

[(1, 51345040), (2, 25672520), (4, 12836260), (5, 10269008), (8, 6418130), (10, 5134504), (16, 3209065), (20, 2567252), (40, 1283626), (80, 641813)]