20181860

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{7703}}^1$

素因数の和:7843

約数の個数: 24

約数和(自身を含む): 42710976

約数和(自身を除く): 22529116

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 7703, 15406, 30812, 38515, 77030, 154060, 1009093, 2018186, 4036372, 5045465, 10090930, 20181860]

約数ペア:

[(1, 20181860), (2, 10090930), (4, 5045465), (5, 4036372), (10, 2018186), (20, 1009093), (131, 154060), (262, 77030), (524, 38515), (655, 30812), (1310, 15406), (2620, 7703)]