51297040

素因数分解:

$2^4\times 5^1\times {\mathrm{641213}}^1$

素因数の和:641226

約数の個数: 20

約数和(自身を含む): 119265804

約数和(自身を除く): 67968764

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 641213, 1282426, 2564852, 3206065, 5129704, 6412130, 10259408, 12824260, 25648520, 51297040]

約数ペア:

[(1, 51297040), (2, 25648520), (4, 12824260), (5, 10259408), (8, 6412130), (10, 5129704), (16, 3206065), (20, 2564852), (40, 1282426), (80, 641213)]