71313680

素因数分解:

$2^4\times 5^1\times {\mathrm{891421}}^1$

素因数の和:891434

約数の個数: 20

約数和(自身を含む): 165804492

約数和(自身を除く): 94490812

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 891421, 1782842, 3565684, 4457105, 7131368, 8914210, 14262736, 17828420, 35656840, 71313680]

約数ペア:

[(1, 71313680), (2, 35656840), (4, 17828420), (5, 14262736), (8, 8914210), (10, 7131368), (16, 4457105), (20, 3565684), (40, 1782842), (80, 891421)]