320172920

素因数分解:

$2^3\times 5^1\times {\mathrm{449}}^1\times {\mathrm{17827}}^1$

素因数の和:18287

約数の個数: 32

約数和(自身を含む): 722034000

約数和(自身を除く): 401861080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 449, 898, 1796, 2245, 3592, 4490, 8980, 17827, 17960, 35654, 71308, 89135, 142616, 178270, 356540, 713080, 8004323, 16008646, 32017292, 40021615, 64034584, 80043230, 160086460, 320172920]

約数ペア:

[(1, 320172920), (2, 160086460), (4, 80043230), (5, 64034584), (8, 40021615), (10, 32017292), (20, 16008646), (40, 8004323), (449, 713080), (898, 356540), (1796, 178270), (2245, 142616), (3592, 89135), (4490, 71308), (8980, 35654), (17827, 17960)]