80865520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53201}}^1$

素因数の和:53233

約数の個数: 40

約数和(自身を含む): 197911440

約数和(自身を除く): 117045920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 53201, 106402, 212804, 266005, 425608, 532010, 851216, 1010819, 1064020, 2021638, 2128040, 4043276, 4256080, 5054095, 8086552, 10108190, 16173104, 20216380, 40432760, 80865520]

約数ペア:

[(1, 80865520), (2, 40432760), (4, 20216380), (5, 16173104), (8, 10108190), (10, 8086552), (16, 5054095), (19, 4256080), (20, 4043276), (38, 2128040), (40, 2021638), (76, 1064020), (80, 1010819), (95, 851216), (152, 532010), (190, 425608), (304, 266005), (380, 212804), (760, 106402), (1520, 53201)]