71380180

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{87049}}^1$

素因数の和:87099

約数の個数: 24

約数和(自身を含む): 153556200

約数和(自身を除く): 82176020

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 87049, 174098, 348196, 435245, 870490, 1740980, 3569009, 7138018, 14276036, 17845045, 35690090, 71380180]

約数ペア:

[(1, 71380180), (2, 35690090), (4, 17845045), (5, 14276036), (10, 7138018), (20, 3569009), (41, 1740980), (82, 870490), (164, 435245), (205, 348196), (410, 174098), (820, 87049)]