20902240

素因数分解:

$2^5\times 5^1\times {\mathrm{130639}}^1$

素因数の和:130654

約数の個数: 24

約数和(自身を含む): 49381920

約数和(自身を除く): 28479680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 130639, 261278, 522556, 653195, 1045112, 1306390, 2090224, 2612780, 4180448, 5225560, 10451120, 20902240]

約数ペア:

[(1, 20902240), (2, 10451120), (4, 5225560), (5, 4180448), (8, 2612780), (10, 2090224), (16, 1306390), (20, 1045112), (32, 653195), (40, 522556), (80, 261278), (160, 130639)]