71312180

素因数分解:

$2^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{12689}}^1$

素因数の和:12979

約数の個数: 24

約数和(自身を含む): 150300360

約数和(自身を除く): 78988180

約数列:

[1, 2, 4, 5, 10, 20, 281, 562, 1124, 1405, 2810, 5620, 12689, 25378, 50756, 63445, 126890, 253780, 3565609, 7131218, 14262436, 17828045, 35656090, 71312180]

約数ペア:

[(1, 71312180), (2, 35656090), (4, 17828045), (5, 14262436), (10, 7131218), (20, 3565609), (281, 253780), (562, 126890), (1124, 63445), (1405, 50756), (2810, 25378), (5620, 12689)]