21872155

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1\times {\mathrm{571}}^1$

素因数の和:786

約数の個数: 16

約数和(自身を含む): 27016704

約数和(自身を除く): 5144549

約数列:

[1, 5, 47, 163, 235, 571, 815, 2855, 7661, 26837, 38305, 93073, 134185, 465365, 4374431, 21872155]

約数ペア:

[(1, 21872155), (5, 4374431), (47, 465365), (163, 134185), (235, 93073), (571, 38305), (815, 26837), (2855, 7661)]