127756480

素因数分解:

$2^6\times 5^1\times {\mathrm{399239}}^1$

素因数の和:399256

約数の個数: 28

約数和(自身を含む): 304220880

約数和(自身を除く): 176464400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 399239, 798478, 1596956, 1996195, 3193912, 3992390, 6387824, 7984780, 12775648, 15969560, 25551296, 31939120, 63878240, 127756480]

約数ペア:

[(1, 127756480), (2, 63878240), (4, 31939120), (5, 25551296), (8, 15969560), (10, 12775648), (16, 7984780), (20, 6387824), (32, 3992390), (40, 3193912), (64, 1996195), (80, 1596956), (160, 798478), (320, 399239)]