81903780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{65003}}^1$

素因数の和:65025

約数の個数: 72

約数和(自身を含む): 283937472

約数和(自身を除く): 202033692

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 65003, 130006, 195009, 260012, 325015, 390018, 455021, 585027, 650030, 780036, 910042, 975045, 1170054, 1300060, 1365063, 1820084, 1950090, 2275105, 2340108, 2730126, 2925135, 3900180, 4095189, 4550210, 5460252, 5850270, 6825315, 8190378, 9100420, 11700540, 13650630, 16380756, 20475945, 27301260, 40951890, 81903780]

約数ペア:

[(1, 81903780), (2, 40951890), (3, 27301260), (4, 20475945), (5, 16380756), (6, 13650630), (7, 11700540), (9, 9100420), (10, 8190378), (12, 6825315), (14, 5850270), (15, 5460252), (18, 4550210), (20, 4095189), (21, 3900180), (28, 2925135), (30, 2730126), (35, 2340108), (36, 2275105), (42, 1950090), (45, 1820084), (60, 1365063), (63, 1300060), (70, 1170054), (84, 975045), (90, 910042), (105, 780036), (126, 650030), (140, 585027), (180, 455021), (210, 390018), (252, 325015), (315, 260012), (420, 195009), (630, 130006), (1260, 65003)]