21079735

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{271}}^1\times {\mathrm{331}}^1$

素因数の和:654

約数の個数: 16

約数和(自身を含む): 26007552

約数和(自身を除く): 4927817

約数列:

[1, 5, 47, 235, 271, 331, 1355, 1655, 12737, 15557, 63685, 77785, 89701, 448505, 4215947, 21079735]

約数ペア:

[(1, 21079735), (5, 4215947), (47, 448505), (235, 89701), (271, 77785), (331, 63685), (1355, 15557), (1655, 12737)]