20778500

素因数分解:

$2^2\times 5^3\times {\mathrm{29}}^1\times {\mathrm{1433}}^1$

素因数の和:1481

約数の個数: 48

約数和(自身を含む): 46977840

約数和(自身を除く): 26199340

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 100, 116, 125, 145, 250, 290, 500, 580, 725, 1433, 1450, 2866, 2900, 3625, 5732, 7165, 7250, 14330, 14500, 28660, 35825, 41557, 71650, 83114, 143300, 166228, 179125, 207785, 358250, 415570, 716500, 831140, 1038925, 2077850, 4155700, 5194625, 10389250, 20778500]

約数ペア:

[(1, 20778500), (2, 10389250), (4, 5194625), (5, 4155700), (10, 2077850), (20, 1038925), (25, 831140), (29, 716500), (50, 415570), (58, 358250), (100, 207785), (116, 179125), (125, 166228), (145, 143300), (250, 83114), (290, 71650), (500, 41557), (580, 35825), (725, 28660), (1433, 14500), (1450, 14330), (2866, 7250), (2900, 7165), (3625, 5732)]