21225175

素因数分解:

$5^2\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{193}}^1$

素因数の和:339

約数の個数: 24

約数和(自身を含む): 27279504

約数和(自身を除く): 6054329

約数列:

[1, 5, 25, 53, 83, 193, 265, 415, 965, 1325, 2075, 4399, 4825, 10229, 16019, 21995, 51145, 80095, 109975, 255725, 400475, 849007, 4245035, 21225175]

約数ペア:

[(1, 21225175), (5, 4245035), (25, 849007), (53, 400475), (83, 255725), (193, 109975), (265, 80095), (415, 51145), (965, 21995), (1325, 16019), (2075, 10229), (4399, 4825)]