81270840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{3121}}^1$

素因数の和:3173

約数の個数: 128

約数和(自身を含む): 287723520

約数和(自身を除く): 206452680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 31, 35, 40, 42, 56, 60, 62, 70, 84, 93, 105, 120, 124, 140, 155, 168, 186, 210, 217, 248, 280, 310, 372, 420, 434, 465, 620, 651, 744, 840, 868, 930, 1085, 1240, 1302, 1736, 1860, 2170, 2604, 3121, 3255, 3720, 4340, 5208, 6242, 6510, 8680, 9363, 12484, 13020, 15605, 18726, 21847, 24968, 26040, 31210, 37452, 43694, 46815, 62420, 65541, 74904, 87388, 93630, 96751, 109235, 124840, 131082, 174776, 187260, 193502, 218470, 262164, 290253, 327705, 374520, 387004, 436940, 483755, 524328, 580506, 655410, 677257, 774008, 873880, 967510, 1161012, 1310820, 1354514, 1451265, 1935020, 2031771, 2322024, 2621640, 2709028, 2902530, 3386285, 3870040, 4063542, 5418056, 5805060, 6772570, 8127084, 10158855, 11610120, 13545140, 16254168, 20317710, 27090280, 40635420, 81270840]

約数ペア:

[(1, 81270840), (2, 40635420), (3, 27090280), (4, 20317710), (5, 16254168), (6, 13545140), (7, 11610120), (8, 10158855), (10, 8127084), (12, 6772570), (14, 5805060), (15, 5418056), (20, 4063542), (21, 3870040), (24, 3386285), (28, 2902530), (30, 2709028), (31, 2621640), (35, 2322024), (40, 2031771), (42, 1935020), (56, 1451265), (60, 1354514), (62, 1310820), (70, 1161012), (84, 967510), (93, 873880), (105, 774008), (120, 677257), (124, 655410), (140, 580506), (155, 524328), (168, 483755), (186, 436940), (210, 387004), (217, 374520), (248, 327705), (280, 290253), (310, 262164), (372, 218470), (420, 193502), (434, 187260), (465, 174776), (620, 131082), (651, 124840), (744, 109235), (840, 96751), (868, 93630), (930, 87388), (1085, 74904), (1240, 65541), (1302, 62420), (1736, 46815), (1860, 43694), (2170, 37452), (2604, 31210), (3121, 26040), (3255, 24968), (3720, 21847), (4340, 18726), (5208, 15605), (6242, 13020), (6510, 12484), (8680, 9363)]