28943980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{111323}}^1$

素因数の和:111345

約数の個数: 24

約数和(自身を含む): 65458512

約数和(自身を除く): 36514532

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 111323, 222646, 445292, 556615, 1113230, 1447199, 2226460, 2894398, 5788796, 7235995, 14471990, 28943980]

約数ペア:

[(1, 28943980), (2, 14471990), (4, 7235995), (5, 5788796), (10, 2894398), (13, 2226460), (20, 1447199), (26, 1113230), (52, 556615), (65, 445292), (130, 222646), (260, 111323)]