661425880

素因数分解:

$2^3\times 5^1\times {\mathrm{16535647}}^1$

素因数の和:16535658

約数の個数: 16

約数和(自身を含む): 1488208320

約数和(自身を除く): 826782440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 16535647, 33071294, 66142588, 82678235, 132285176, 165356470, 330712940, 661425880]

約数ペア:

[(1, 661425880), (2, 330712940), (4, 165356470), (5, 132285176), (8, 82678235), (10, 66142588), (20, 33071294), (40, 16535647)]