2128780

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{653}}^1$

素因数の和:825

約数の個数: 24

約数和(自身を含む): 4504752

約数和(自身を除く): 2375972

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 653, 815, 1306, 1630, 2612, 3260, 3265, 6530, 13060, 106439, 212878, 425756, 532195, 1064390, 2128780]

約数ペア:

[(1, 2128780), (2, 1064390), (4, 532195), (5, 425756), (10, 212878), (20, 106439), (163, 13060), (326, 6530), (652, 3265), (653, 3260), (815, 2612), (1306, 1630)]