20255560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{38953}}^1$

素因数の和:38977

約数の個数: 32

約数和(自身を含む): 49082040

約数和(自身を除く): 28826480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 38953, 77906, 155812, 194765, 311624, 389530, 506389, 779060, 1012778, 1558120, 2025556, 2531945, 4051112, 5063890, 10127780, 20255560]

約数ペア:

[(1, 20255560), (2, 10127780), (4, 5063890), (5, 4051112), (8, 2531945), (10, 2025556), (13, 1558120), (20, 1012778), (26, 779060), (40, 506389), (52, 389530), (65, 311624), (104, 194765), (130, 155812), (260, 77906), (520, 38953)]