64842860

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{7927}}^1$

素因数の和:8345

約数の個数: 24

約数和(自身を含む): 136520160

約数和(自身を除く): 71677300

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 1636, 2045, 4090, 7927, 8180, 15854, 31708, 39635, 79270, 158540, 3242143, 6484286, 12968572, 16210715, 32421430, 64842860]

約数ペア:

[(1, 64842860), (2, 32421430), (4, 16210715), (5, 12968572), (10, 6484286), (20, 3242143), (409, 158540), (818, 79270), (1636, 39635), (2045, 31708), (4090, 15854), (7927, 8180)]