51399140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197689}}^1$

素因数の和:197711

約数の個数: 24

約数和(自身を含む): 116241720

約数和(自身を除く): 64842580

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 197689, 395378, 790756, 988445, 1976890, 2569957, 3953780, 5139914, 10279828, 12849785, 25699570, 51399140]

約数ペア:

[(1, 51399140), (2, 25699570), (4, 12849785), (5, 10279828), (10, 5139914), (13, 3953780), (20, 2569957), (26, 1976890), (52, 988445), (65, 790756), (130, 395378), (260, 197689)]