21821175

素因数分解:

$3^2\times 5^2\times {\mathrm{293}}^1\times {\mathrm{331}}^1$

素因数の和:640

約数の個数: 36

約数和(自身を含む): 39336024

約数和(自身を除く): 17514849

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 293, 331, 879, 993, 1465, 1655, 2637, 2979, 4395, 4965, 7325, 8275, 13185, 14895, 21975, 24825, 65925, 74475, 96983, 290949, 484915, 872847, 1454745, 2424575, 4364235, 7273725, 21821175]

約数ペア:

[(1, 21821175), (3, 7273725), (5, 4364235), (9, 2424575), (15, 1454745), (25, 872847), (45, 484915), (75, 290949), (225, 96983), (293, 74475), (331, 65925), (879, 24825), (993, 21975), (1465, 14895), (1655, 13185), (2637, 8275), (2979, 7325), (4395, 4965)]