30720368

素因数分解:

$2^4\times 7^1\times {\mathrm{103}}^1\times {\mathrm{2663}}^1$

素因数の和:2781

約数の個数: 40

約数和(自身を含む): 68709888

約数和(自身を除く): 37989520

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 103, 112, 206, 412, 721, 824, 1442, 1648, 2663, 2884, 5326, 5768, 10652, 11536, 18641, 21304, 37282, 42608, 74564, 149128, 274289, 298256, 548578, 1097156, 1920023, 2194312, 3840046, 4388624, 7680092, 15360184, 30720368]

約数ペア:

[(1, 30720368), (2, 15360184), (4, 7680092), (7, 4388624), (8, 3840046), (14, 2194312), (16, 1920023), (28, 1097156), (56, 548578), (103, 298256), (112, 274289), (206, 149128), (412, 74564), (721, 42608), (824, 37282), (1442, 21304), (1648, 18641), (2663, 11536), (2884, 10652), (5326, 5768)]