81357075

素因数分解:

$3^3\times 5^2\times {\mathrm{43}}^1\times {\mathrm{2803}}^1$

素因数の和:2865

約数の個数: 48

約数和(自身を含む): 152986240

約数和(自身を除く): 71629165

約数列:

[1, 3, 5, 9, 15, 25, 27, 43, 45, 75, 129, 135, 215, 225, 387, 645, 675, 1075, 1161, 1935, 2803, 3225, 5805, 8409, 9675, 14015, 25227, 29025, 42045, 70075, 75681, 120529, 126135, 210225, 361587, 378405, 602645, 630675, 1084761, 1807935, 1892025, 3013225, 3254283, 5423805, 9039675, 16271415, 27119025, 81357075]

約数ペア:

[(1, 81357075), (3, 27119025), (5, 16271415), (9, 9039675), (15, 5423805), (25, 3254283), (27, 3013225), (43, 1892025), (45, 1807935), (75, 1084761), (129, 630675), (135, 602645), (215, 378405), (225, 361587), (387, 210225), (645, 126135), (675, 120529), (1075, 75681), (1161, 70075), (1935, 42045), (2803, 29025), (3225, 25227), (5805, 14015), (8409, 9675)]