81309420

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{947}}^1$

素因数の和:1021

約数の個数: 120

約数和(自身を含む): 260157744

約数和(自身を除く): 178848324

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 53, 54, 60, 81, 90, 106, 108, 135, 159, 162, 180, 212, 265, 270, 318, 324, 405, 477, 530, 540, 636, 795, 810, 947, 954, 1060, 1431, 1590, 1620, 1894, 1908, 2385, 2841, 2862, 3180, 3788, 4293, 4735, 4770, 5682, 5724, 7155, 8523, 8586, 9470, 9540, 11364, 14205, 14310, 17046, 17172, 18940, 21465, 25569, 28410, 28620, 34092, 42615, 42930, 50191, 51138, 56820, 76707, 85230, 85860, 100382, 102276, 127845, 150573, 153414, 170460, 200764, 250955, 255690, 301146, 306828, 383535, 451719, 501910, 511380, 602292, 752865, 767070, 903438, 1003820, 1355157, 1505730, 1534140, 1806876, 2258595, 2710314, 3011460, 4065471, 4517190, 5420628, 6775785, 8130942, 9034380, 13551570, 16261884, 20327355, 27103140, 40654710, 81309420]

約数ペア:

[(1, 81309420), (2, 40654710), (3, 27103140), (4, 20327355), (5, 16261884), (6, 13551570), (9, 9034380), (10, 8130942), (12, 6775785), (15, 5420628), (18, 4517190), (20, 4065471), (27, 3011460), (30, 2710314), (36, 2258595), (45, 1806876), (53, 1534140), (54, 1505730), (60, 1355157), (81, 1003820), (90, 903438), (106, 767070), (108, 752865), (135, 602292), (159, 511380), (162, 501910), (180, 451719), (212, 383535), (265, 306828), (270, 301146), (318, 255690), (324, 250955), (405, 200764), (477, 170460), (530, 153414), (540, 150573), (636, 127845), (795, 102276), (810, 100382), (947, 85860), (954, 85230), (1060, 76707), (1431, 56820), (1590, 51138), (1620, 50191), (1894, 42930), (1908, 42615), (2385, 34092), (2841, 28620), (2862, 28410), (3180, 25569), (3788, 21465), (4293, 18940), (4735, 17172), (4770, 17046), (5682, 14310), (5724, 14205), (7155, 11364), (8523, 9540), (8586, 9470)]