81480420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{64667}}^1$

素因数の和:64689

約数の個数: 72

約数和(自身を含む): 282469824

約数和(自身を除く): 200989404

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, 64667, 129334, 194001, 258668, 323335, 388002, 452669, 582003, 646670, 776004, 905338, 970005, 1164006, 1293340, 1358007, 1810676, 1940010, 2263345, 2328012, 2716014, 2910015, 3880020, 4074021, 4526690, 5432028, 5820030, 6790035, 8148042, 9053380, 11640060, 13580070, 16296084, 20370105, 27160140, 40740210, 81480420]

約数ペア:

[(1, 81480420), (2, 40740210), (3, 27160140), (4, 20370105), (5, 16296084), (6, 13580070), (7, 11640060), (9, 9053380), (10, 8148042), (12, 6790035), (14, 5820030), (15, 5432028), (18, 4526690), (20, 4074021), (21, 3880020), (28, 2910015), (30, 2716014), (35, 2328012), (36, 2263345), (42, 1940010), (45, 1810676), (60, 1358007), (63, 1293340), (70, 1164006), (84, 970005), (90, 905338), (105, 776004), (126, 646670), (140, 582003), (180, 452669), (210, 388002), (252, 323335), (315, 258668), (420, 194001), (630, 129334), (1260, 64667)]