21005795

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{421}}^1\times {\mathrm{587}}^1$

素因数の和:1030

約数の個数: 16

約数和(自身を含む): 26798688

約数和(自身を除く): 5792893

約数列:

[1, 5, 17, 85, 421, 587, 2105, 2935, 7157, 9979, 35785, 49895, 247127, 1235635, 4201159, 21005795]

約数ペア:

[(1, 21005795), (5, 4201159), (17, 1235635), (85, 247127), (421, 49895), (587, 35785), (2105, 9979), (2935, 7157)]