128841080

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{10357}}^1$

素因数の和:10679

約数の個数: 32

約数和(自身を含む): 290852640

約数和(自身を除く): 162011560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1555, 2488, 3110, 6220, 10357, 12440, 20714, 41428, 51785, 82856, 103570, 207140, 414280, 3221027, 6442054, 12884108, 16105135, 25768216, 32210270, 64420540, 128841080]

約数ペア:

[(1, 128841080), (2, 64420540), (4, 32210270), (5, 25768216), (8, 16105135), (10, 12884108), (20, 6442054), (40, 3221027), (311, 414280), (622, 207140), (1244, 103570), (1555, 82856), (2488, 51785), (3110, 41428), (6220, 20714), (10357, 12440)]