18639855

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1$

素因数の和:102

約数の個数: 96

約数和(自身を含む): 38649600

約数和(自身を除く): 20009745

約数列:

[1, 3, 5, 9, 13, 15, 19, 27, 39, 43, 45, 57, 65, 95, 117, 129, 135, 169, 171, 195, 215, 247, 285, 351, 387, 507, 513, 559, 585, 645, 741, 817, 845, 855, 1161, 1235, 1521, 1677, 1755, 1935, 2223, 2451, 2535, 2565, 2795, 3211, 3705, 4085, 4563, 5031, 5805, 6669, 7267, 7353, 7605, 8385, 9633, 10621, 11115, 12255, 15093, 16055, 21801, 22059, 22815, 25155, 28899, 31863, 33345, 36335, 36765, 48165, 53105, 65403, 75465, 86697, 95589, 109005, 110295, 138073, 144495, 159315, 196209, 286767, 327015, 414219, 433485, 477945, 690365, 981045, 1242657, 1433835, 2071095, 3727971, 6213285, 18639855]

約数ペア:

[(1, 18639855), (3, 6213285), (5, 3727971), (9, 2071095), (13, 1433835), (15, 1242657), (19, 981045), (27, 690365), (39, 477945), (43, 433485), (45, 414219), (57, 327015), (65, 286767), (95, 196209), (117, 159315), (129, 144495), (135, 138073), (169, 110295), (171, 109005), (195, 95589), (215, 86697), (247, 75465), (285, 65403), (351, 53105), (387, 48165), (507, 36765), (513, 36335), (559, 33345), (585, 31863), (645, 28899), (741, 25155), (817, 22815), (845, 22059), (855, 21801), (1161, 16055), (1235, 15093), (1521, 12255), (1677, 11115), (1755, 10621), (1935, 9633), (2223, 8385), (2451, 7605), (2535, 7353), (2565, 7267), (2795, 6669), (3211, 5805), (3705, 5031), (4085, 4563)]