28318725

素因数分解:

$3^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{2927}}^1$

素因数の和:2986

約数の個数: 36

約数和(自身を含む): 51919296

約数和(自身を除く): 23600571

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 75, 129, 215, 225, 387, 645, 1075, 1935, 2927, 3225, 8781, 9675, 14635, 26343, 43905, 73175, 125861, 131715, 219525, 377583, 629305, 658575, 1132749, 1887915, 3146525, 5663745, 9439575, 28318725]

約数ペア:

[(1, 28318725), (3, 9439575), (5, 5663745), (9, 3146525), (15, 1887915), (25, 1132749), (43, 658575), (45, 629305), (75, 377583), (129, 219525), (215, 131715), (225, 125861), (387, 73175), (645, 43905), (1075, 26343), (1935, 14635), (2927, 9675), (3225, 8781)]