81918900

素因数分解:

$2^2\times 3^2\times 5^2\times 7^1\times {\mathrm{13003}}^1$

素因数の和:13030

約数の個数: 108

約数和(自身を含む): 293474272

約数和(自身を除く): 211555372

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 25, 28, 30, 35, 36, 42, 45, 50, 60, 63, 70, 75, 84, 90, 100, 105, 126, 140, 150, 175, 180, 210, 225, 252, 300, 315, 350, 420, 450, 525, 630, 700, 900, 1050, 1260, 1575, 2100, 3150, 6300, 13003, 26006, 39009, 52012, 65015, 78018, 91021, 117027, 130030, 156036, 182042, 195045, 234054, 260060, 273063, 325075, 364084, 390090, 455105, 468108, 546126, 585135, 650150, 780180, 819189, 910210, 975225, 1092252, 1170270, 1300300, 1365315, 1638378, 1820420, 1950450, 2275525, 2340540, 2730630, 2925675, 3276756, 3900900, 4095945, 4551050, 5461260, 5851350, 6826575, 8191890, 9102100, 11702700, 13653150, 16383780, 20479725, 27306300, 40959450, 81918900]

約数ペア:

[(1, 81918900), (2, 40959450), (3, 27306300), (4, 20479725), (5, 16383780), (6, 13653150), (7, 11702700), (9, 9102100), (10, 8191890), (12, 6826575), (14, 5851350), (15, 5461260), (18, 4551050), (20, 4095945), (21, 3900900), (25, 3276756), (28, 2925675), (30, 2730630), (35, 2340540), (36, 2275525), (42, 1950450), (45, 1820420), (50, 1638378), (60, 1365315), (63, 1300300), (70, 1170270), (75, 1092252), (84, 975225), (90, 910210), (100, 819189), (105, 780180), (126, 650150), (140, 585135), (150, 546126), (175, 468108), (180, 455105), (210, 390090), (225, 364084), (252, 325075), (300, 273063), (315, 260060), (350, 234054), (420, 195045), (450, 182042), (525, 156036), (630, 130030), (700, 117027), (900, 91021), (1050, 78018), (1260, 65015), (1575, 52012), (2100, 39009), (3150, 26006), (6300, 13003)]