21312965

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{7237}}^1$

素因数の和:7292

約数の個数: 16

約数和(自身を含む): 27793920

約数和(自身を除く): 6480955

約数列:

[1, 5, 19, 31, 95, 155, 589, 2945, 7237, 36185, 137503, 224347, 687515, 1121735, 4262593, 21312965]

約数ペア:

[(1, 21312965), (5, 4262593), (19, 1121735), (31, 687515), (95, 224347), (155, 137503), (589, 36185), (2945, 7237)]