21017315

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{13177}}^1$

素因数の和:13222

約数の個数: 16

約数和(自身を含む): 28464480

約数和(自身を除く): 7447165

約数列:

[1, 5, 11, 29, 55, 145, 319, 1595, 13177, 65885, 144947, 382133, 724735, 1910665, 4203463, 21017315]

約数ペア:

[(1, 21017315), (5, 4203463), (11, 1910665), (29, 724735), (55, 382133), (145, 144947), (319, 65885), (1595, 13177)]