20287260

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{1789}}^1$

素因数の和:1817

約数の個数: 120

約数和(自身を含む): 72774240

約数和(自身を除く): 52486980

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 126, 135, 140, 162, 180, 189, 210, 252, 270, 315, 324, 378, 405, 420, 540, 567, 630, 756, 810, 945, 1134, 1260, 1620, 1789, 1890, 2268, 2835, 3578, 3780, 5367, 5670, 7156, 8945, 10734, 11340, 12523, 16101, 17890, 21468, 25046, 26835, 32202, 35780, 37569, 48303, 50092, 53670, 62615, 64404, 75138, 80505, 96606, 107340, 112707, 125230, 144909, 150276, 161010, 187845, 193212, 225414, 241515, 250460, 289818, 322020, 338121, 375690, 450828, 483030, 563535, 579636, 676242, 724545, 751380, 966060, 1014363, 1127070, 1352484, 1449090, 1690605, 2028726, 2254140, 2898180, 3381210, 4057452, 5071815, 6762420, 10143630, 20287260]

約数ペア:

[(1, 20287260), (2, 10143630), (3, 6762420), (4, 5071815), (5, 4057452), (6, 3381210), (7, 2898180), (9, 2254140), (10, 2028726), (12, 1690605), (14, 1449090), (15, 1352484), (18, 1127070), (20, 1014363), (21, 966060), (27, 751380), (28, 724545), (30, 676242), (35, 579636), (36, 563535), (42, 483030), (45, 450828), (54, 375690), (60, 338121), (63, 322020), (70, 289818), (81, 250460), (84, 241515), (90, 225414), (105, 193212), (108, 187845), (126, 161010), (135, 150276), (140, 144909), (162, 125230), (180, 112707), (189, 107340), (210, 96606), (252, 80505), (270, 75138), (315, 64404), (324, 62615), (378, 53670), (405, 50092), (420, 48303), (540, 37569), (567, 35780), (630, 32202), (756, 26835), (810, 25046), (945, 21468), (1134, 17890), (1260, 16101), (1620, 12523), (1789, 11340), (1890, 10734), (2268, 8945), (2835, 7156), (3578, 5670), (3780, 5367)]