21072095

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{727}}^1$

素因数の和:791

約数の個数: 32

約数和(自身を含む): 30191616

約数和(自身を除く): 9119521

約数列:

[1, 5, 11, 17, 31, 55, 85, 155, 187, 341, 527, 727, 935, 1705, 2635, 3635, 5797, 7997, 12359, 22537, 28985, 39985, 61795, 112685, 135949, 247907, 383129, 679745, 1239535, 1915645, 4214419, 21072095]

約数ペア:

[(1, 21072095), (5, 4214419), (11, 1915645), (17, 1239535), (31, 679745), (55, 383129), (85, 247907), (155, 135949), (187, 112685), (341, 61795), (527, 39985), (727, 28985), (935, 22537), (1705, 12359), (2635, 7997), (3635, 5797)]