81349425

素因数分解:

$3^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{109}}^1$

素因数の和:263

約数の個数: 72

約数和(自身を含む): 153204480

約数和(自身を除く): 71855055

約数列:

[1, 3, 5, 9, 15, 25, 31, 45, 75, 93, 107, 109, 155, 225, 279, 321, 327, 465, 535, 545, 775, 963, 981, 1395, 1605, 1635, 2325, 2675, 2725, 3317, 3379, 4815, 4905, 6975, 8025, 8175, 9951, 10137, 11663, 16585, 16895, 24075, 24525, 29853, 30411, 34989, 49755, 50685, 58315, 82925, 84475, 104967, 149265, 152055, 174945, 248775, 253425, 291575, 361553, 524835, 746325, 760275, 874725, 1084659, 1807765, 2624175, 3253977, 5423295, 9038825, 16269885, 27116475, 81349425]

約数ペア:

[(1, 81349425), (3, 27116475), (5, 16269885), (9, 9038825), (15, 5423295), (25, 3253977), (31, 2624175), (45, 1807765), (75, 1084659), (93, 874725), (107, 760275), (109, 746325), (155, 524835), (225, 361553), (279, 291575), (321, 253425), (327, 248775), (465, 174945), (535, 152055), (545, 149265), (775, 104967), (963, 84475), (981, 82925), (1395, 58315), (1605, 50685), (1635, 49755), (2325, 34989), (2675, 30411), (2725, 29853), (3317, 24525), (3379, 24075), (4815, 16895), (4905, 16585), (6975, 11663), (8025, 10137), (8175, 9951)]