21542500

素因数分解:

$2^2\times 5^4\times 7^1\times {\mathrm{1231}}^1$

素因数の和:1262

約数の個数: 60

約数和(自身を含む): 53882752

約数和(自身を除く): 32340252

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 125, 140, 175, 250, 350, 500, 625, 700, 875, 1231, 1250, 1750, 2462, 2500, 3500, 4375, 4924, 6155, 8617, 8750, 12310, 17234, 17500, 24620, 30775, 34468, 43085, 61550, 86170, 123100, 153875, 172340, 215425, 307750, 430850, 615500, 769375, 861700, 1077125, 1538750, 2154250, 3077500, 4308500, 5385625, 10771250, 21542500]

約数ペア:

[(1, 21542500), (2, 10771250), (4, 5385625), (5, 4308500), (7, 3077500), (10, 2154250), (14, 1538750), (20, 1077125), (25, 861700), (28, 769375), (35, 615500), (50, 430850), (70, 307750), (100, 215425), (125, 172340), (140, 153875), (175, 123100), (250, 86170), (350, 61550), (500, 43085), (625, 34468), (700, 30775), (875, 24620), (1231, 17500), (1250, 17234), (1750, 12310), (2462, 8750), (2500, 8617), (3500, 6155), (4375, 4924)]