78956980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{96289}}^1$

素因数の和:96339

約数の個数: 24

約数和(自身を含む): 169855560

約数和(自身を除く): 90898580

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 96289, 192578, 385156, 481445, 962890, 1925780, 3947849, 7895698, 15791396, 19739245, 39478490, 78956980]

約数ペア:

[(1, 78956980), (2, 39478490), (4, 19739245), (5, 15791396), (10, 7895698), (20, 3947849), (41, 1925780), (82, 962890), (164, 481445), (205, 385156), (410, 192578), (820, 96289)]