20405500

素因数分解:

$2^2\times 5^3\times {\mathrm{37}}^1\times {\mathrm{1103}}^1$

素因数の和:1159

約数の個数: 48

約数和(自身を含む): 45811584

約数和(自身を除く): 25406084

約数列:

[1, 2, 4, 5, 10, 20, 25, 37, 50, 74, 100, 125, 148, 185, 250, 370, 500, 740, 925, 1103, 1850, 2206, 3700, 4412, 4625, 5515, 9250, 11030, 18500, 22060, 27575, 40811, 55150, 81622, 110300, 137875, 163244, 204055, 275750, 408110, 551500, 816220, 1020275, 2040550, 4081100, 5101375, 10202750, 20405500]

約数ペア:

[(1, 20405500), (2, 10202750), (4, 5101375), (5, 4081100), (10, 2040550), (20, 1020275), (25, 816220), (37, 551500), (50, 408110), (74, 275750), (100, 204055), (125, 163244), (148, 137875), (185, 110300), (250, 81622), (370, 55150), (500, 40811), (740, 27575), (925, 22060), (1103, 18500), (1850, 11030), (2206, 9250), (3700, 5515), (4412, 4625)]