72912520

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{42391}}^1$

素因数の和:42445

約数の個数: 32

約数和(自身を含む): 167872320

約数和(自身を除く): 94959800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 42391, 84782, 169564, 211955, 339128, 423910, 847820, 1695640, 1822813, 3645626, 7291252, 9114065, 14582504, 18228130, 36456260, 72912520]

約数ペア:

[(1, 72912520), (2, 36456260), (4, 18228130), (5, 14582504), (8, 9114065), (10, 7291252), (20, 3645626), (40, 1822813), (43, 1695640), (86, 847820), (172, 423910), (215, 339128), (344, 211955), (430, 169564), (860, 84782), (1720, 42391)]