20148880

素因数分解:

$2^4\times 5^1\times {\mathrm{251861}}^1$

素因数の和:251874

約数の個数: 20

約数和(自身を含む): 46846332

約数和(自身を除く): 26697452

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251861, 503722, 1007444, 1259305, 2014888, 2518610, 4029776, 5037220, 10074440, 20148880]

約数ペア:

[(1, 20148880), (2, 10074440), (4, 5037220), (5, 4029776), (8, 2518610), (10, 2014888), (16, 1259305), (20, 1007444), (40, 503722), (80, 251861)]