28484980

素因数分解:

$2^2\times 5^1\times {\mathrm{557}}^1\times {\mathrm{2557}}^1$

素因数の和:3123

約数の個数: 24

約数和(自身を含む): 59949288

約数和(自身を除く): 31464308

約数列:

[1, 2, 4, 5, 10, 20, 557, 1114, 2228, 2557, 2785, 5114, 5570, 10228, 11140, 12785, 25570, 51140, 1424249, 2848498, 5696996, 7121245, 14242490, 28484980]

約数ペア:

[(1, 28484980), (2, 14242490), (4, 7121245), (5, 5696996), (10, 2848498), (20, 1424249), (557, 51140), (1114, 25570), (2228, 12785), (2557, 11140), (2785, 10228), (5114, 5570)]