81669440

素因数分解:

$2^6\times 5^1\times {\mathrm{255217}}^1$

素因数の和:255234

約数の個数: 28

約数和(自身を含む): 194476116

約数和(自身を除く): 112806676

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 255217, 510434, 1020868, 1276085, 2041736, 2552170, 4083472, 5104340, 8166944, 10208680, 16333888, 20417360, 40834720, 81669440]

約数ペア:

[(1, 81669440), (2, 40834720), (4, 20417360), (5, 16333888), (8, 10208680), (10, 8166944), (16, 5104340), (20, 4083472), (32, 2552170), (40, 2041736), (64, 1276085), (80, 1020868), (160, 510434), (320, 255217)]