64470860

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{78623}}^1$

素因数の和:78673

約数の個数: 24

約数和(自身を含む): 138692736

約数和(自身を除く): 74221876

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 78623, 157246, 314492, 393115, 786230, 1572460, 3223543, 6447086, 12894172, 16117715, 32235430, 64470860]

約数ペア:

[(1, 64470860), (2, 32235430), (4, 16117715), (5, 12894172), (10, 6447086), (20, 3223543), (41, 1572460), (82, 786230), (164, 393115), (205, 314492), (410, 157246), (820, 78623)]