18779175

素因数分解:

$3^3\times 5^2\times {\mathrm{43}}^1\times {\mathrm{647}}^1$

素因数の和:709

約数の個数: 48

約数和(自身を含む): 35354880

約数和(自身を除く): 16575705

約数列:

[1, 3, 5, 9, 15, 25, 27, 43, 45, 75, 129, 135, 215, 225, 387, 645, 647, 675, 1075, 1161, 1935, 1941, 3225, 3235, 5805, 5823, 9675, 9705, 16175, 17469, 27821, 29025, 29115, 48525, 83463, 87345, 139105, 145575, 250389, 417315, 436725, 695525, 751167, 1251945, 2086575, 3755835, 6259725, 18779175]

約数ペア:

[(1, 18779175), (3, 6259725), (5, 3755835), (9, 2086575), (15, 1251945), (25, 751167), (27, 695525), (43, 436725), (45, 417315), (75, 250389), (129, 145575), (135, 139105), (215, 87345), (225, 83463), (387, 48525), (645, 29115), (647, 29025), (675, 27821), (1075, 17469), (1161, 16175), (1935, 9705), (1941, 9675), (3225, 5823), (3235, 5805)]