1618376440

素因数分解:

$2^3\times 5^1\times {\mathrm{2557}}^1\times {\mathrm{15823}}^1$

素因数の和:18391

約数の個数: 32

約数和(自身を含む): 3643001280

約数和(自身を除く): 2024624840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2557, 5114, 10228, 12785, 15823, 20456, 25570, 31646, 51140, 63292, 79115, 102280, 126584, 158230, 316460, 632920, 40459411, 80918822, 161837644, 202297055, 323675288, 404594110, 809188220, 1618376440]

約数ペア:

[(1, 1618376440), (2, 809188220), (4, 404594110), (5, 323675288), (8, 202297055), (10, 161837644), (20, 80918822), (40, 40459411), (2557, 632920), (5114, 316460), (10228, 158230), (12785, 126584), (15823, 102280), (20456, 79115), (25570, 63292), (31646, 51140)]