21308151

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1\times {\mathrm{907}}^1$

素因数の和:1142

約数の個数: 16

約数和(自身を含む): 29288448

約数和(自身を除く): 7980297

約数列:

[1, 3, 41, 123, 191, 573, 907, 2721, 7831, 23493, 37187, 111561, 173237, 519711, 7102717, 21308151]

約数ペア:

[(1, 21308151), (3, 7102717), (41, 519711), (123, 173237), (191, 111561), (573, 37187), (907, 23493), (2721, 7831)]