81395775

素因数分解:

$3^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{179}}^1$

素因数の和:285

約数の個数: 72

約数和(自身を含む): 153204480

約数和(自身を除く): 71808705

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 47, 75, 129, 141, 179, 215, 225, 235, 387, 423, 537, 645, 705, 895, 1075, 1175, 1611, 1935, 2021, 2115, 2685, 3225, 3525, 4475, 6063, 7697, 8055, 8413, 9675, 10105, 10575, 13425, 18189, 23091, 25239, 30315, 38485, 40275, 42065, 50525, 69273, 75717, 90945, 115455, 126195, 151575, 192425, 210325, 346365, 361759, 378585, 454725, 577275, 630975, 1085277, 1731825, 1808795, 1892925, 3255831, 5426385, 9043975, 16279155, 27131925, 81395775]

約数ペア:

[(1, 81395775), (3, 27131925), (5, 16279155), (9, 9043975), (15, 5426385), (25, 3255831), (43, 1892925), (45, 1808795), (47, 1731825), (75, 1085277), (129, 630975), (141, 577275), (179, 454725), (215, 378585), (225, 361759), (235, 346365), (387, 210325), (423, 192425), (537, 151575), (645, 126195), (705, 115455), (895, 90945), (1075, 75717), (1175, 69273), (1611, 50525), (1935, 42065), (2021, 40275), (2115, 38485), (2685, 30315), (3225, 25239), (3525, 23091), (4475, 18189), (6063, 13425), (7697, 10575), (8055, 10105), (8413, 9675)]