20402225

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{263}}^1$

素因数の和:409

約数の個数: 24

約数和(自身を含む): 26516160

約数和(自身を除く): 6113935

約数列:

[1, 5, 25, 29, 107, 145, 263, 535, 725, 1315, 2675, 3103, 6575, 7627, 15515, 28141, 38135, 77575, 140705, 190675, 703525, 816089, 4080445, 20402225]

約数ペア:

[(1, 20402225), (5, 4080445), (25, 816089), (29, 703525), (107, 190675), (145, 140705), (263, 77575), (535, 38135), (725, 28141), (1315, 15515), (2675, 7627), (3103, 6575)]