13120820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{16001}}^1$

素因数の和:16051

約数の個数: 24

約数和(自身を含む): 28227528

約数和(自身を除く): 15106708

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 16001, 32002, 64004, 80005, 160010, 320020, 656041, 1312082, 2624164, 3280205, 6560410, 13120820]

約数ペア:

[(1, 13120820), (2, 6560410), (4, 3280205), (5, 2624164), (10, 1312082), (20, 656041), (41, 320020), (82, 160010), (164, 80005), (205, 64004), (410, 32002), (820, 16001)]