81976275

素因数分解:

$3^2\times 5^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{229}}^1$

素因数の和:325

約数の個数: 72

約数和(自身を含む): 154977680

約数和(自身を除く): 73001405

約数列:

[1, 3, 5, 9, 15, 25, 37, 43, 45, 75, 111, 129, 185, 215, 225, 229, 333, 387, 555, 645, 687, 925, 1075, 1145, 1591, 1665, 1935, 2061, 2775, 3225, 3435, 4773, 5725, 7955, 8325, 8473, 9675, 9847, 10305, 14319, 17175, 23865, 25419, 29541, 39775, 42365, 49235, 51525, 71595, 76257, 88623, 119325, 127095, 147705, 211825, 246175, 357975, 364339, 381285, 443115, 635475, 738525, 1093017, 1821695, 1906425, 2215575, 3279051, 5465085, 9108475, 16395255, 27325425, 81976275]

約数ペア:

[(1, 81976275), (3, 27325425), (5, 16395255), (9, 9108475), (15, 5465085), (25, 3279051), (37, 2215575), (43, 1906425), (45, 1821695), (75, 1093017), (111, 738525), (129, 635475), (185, 443115), (215, 381285), (225, 364339), (229, 357975), (333, 246175), (387, 211825), (555, 147705), (645, 127095), (687, 119325), (925, 88623), (1075, 76257), (1145, 71595), (1591, 51525), (1665, 49235), (1935, 42365), (2061, 39775), (2775, 29541), (3225, 25419), (3435, 23865), (4773, 17175), (5725, 14319), (7955, 10305), (8325, 9847), (8473, 9675)]