19994860

素因数分解:

$2^2\times 5^1\times {\mathrm{653}}^1\times {\mathrm{1531}}^1$

素因数の和:2193

約数の個数: 24

約数和(自身を含む): 42080976

約数和(自身を除く): 22086116

約数列:

[1, 2, 4, 5, 10, 20, 653, 1306, 1531, 2612, 3062, 3265, 6124, 6530, 7655, 13060, 15310, 30620, 999743, 1999486, 3998972, 4998715, 9997430, 19994860]

約数ペア:

[(1, 19994860), (2, 9997430), (4, 4998715), (5, 3998972), (10, 1999486), (20, 999743), (653, 30620), (1306, 15310), (1531, 13060), (2612, 7655), (3062, 6530), (3265, 6124)]