21243850

素因数分解:

$2^1\times 5^2\times {\mathrm{83}}^1\times {\mathrm{5119}}^1$

素因数の和:5214

約数の個数: 24

約数和(自身を含む): 39997440

約数和(自身を除く): 18753590

約数列:

[1, 2, 5, 10, 25, 50, 83, 166, 415, 830, 2075, 4150, 5119, 10238, 25595, 51190, 127975, 255950, 424877, 849754, 2124385, 4248770, 10621925, 21243850]

約数ペア:

[(1, 21243850), (2, 10621925), (5, 4248770), (10, 2124385), (25, 849754), (50, 424877), (83, 255950), (166, 127975), (415, 51190), (830, 25595), (2075, 10238), (4150, 5119)]