21746175

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{613}}^1$

素因数の和:680

約数の個数: 48

約数和(自身を含む): 40199808

約数和(自身を除く): 18453633

約数列:

[1, 3, 5, 11, 15, 25, 33, 43, 55, 75, 129, 165, 215, 275, 473, 613, 645, 825, 1075, 1419, 1839, 2365, 3065, 3225, 6743, 7095, 9195, 11825, 15325, 20229, 26359, 33715, 35475, 45975, 79077, 101145, 131795, 168575, 289949, 395385, 505725, 658975, 869847, 1449745, 1976925, 4349235, 7248725, 21746175]

約数ペア:

[(1, 21746175), (3, 7248725), (5, 4349235), (11, 1976925), (15, 1449745), (25, 869847), (33, 658975), (43, 505725), (55, 395385), (75, 289949), (129, 168575), (165, 131795), (215, 101145), (275, 79077), (473, 45975), (613, 35475), (645, 33715), (825, 26359), (1075, 20229), (1419, 15325), (1839, 11825), (2365, 9195), (3065, 7095), (3225, 6743)]