28780880

素因数分解:

$2^4\times 5^1\times {\mathrm{359761}}^1$

素因数の和:359774

約数の個数: 20

約数和(自身を含む): 66915732

約数和(自身を除く): 38134852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 359761, 719522, 1439044, 1798805, 2878088, 3597610, 5756176, 7195220, 14390440, 28780880]

約数ペア:

[(1, 28780880), (2, 14390440), (4, 7195220), (5, 5756176), (8, 3597610), (10, 2878088), (16, 1798805), (20, 1439044), (40, 719522), (80, 359761)]