81306180

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1619}}^1$

素因数の和:1671

約数の個数: 120

約数和(自身を含む): 263450880

約数和(自身を除く): 182144700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 31, 36, 45, 54, 60, 62, 81, 90, 93, 108, 124, 135, 155, 162, 180, 186, 270, 279, 310, 324, 372, 405, 465, 540, 558, 620, 810, 837, 930, 1116, 1395, 1619, 1620, 1674, 1860, 2511, 2790, 3238, 3348, 4185, 4857, 5022, 5580, 6476, 8095, 8370, 9714, 10044, 12555, 14571, 16190, 16740, 19428, 24285, 25110, 29142, 32380, 43713, 48570, 50189, 50220, 58284, 72855, 87426, 97140, 100378, 131139, 145710, 150567, 174852, 200756, 218565, 250945, 262278, 291420, 301134, 437130, 451701, 501890, 524556, 602268, 655695, 752835, 874260, 903402, 1003780, 1311390, 1355103, 1505670, 1806804, 2258505, 2622780, 2710206, 3011340, 4065309, 4517010, 5420412, 6775515, 8130618, 9034020, 13551030, 16261236, 20326545, 27102060, 40653090, 81306180]

約数ペア:

[(1, 81306180), (2, 40653090), (3, 27102060), (4, 20326545), (5, 16261236), (6, 13551030), (9, 9034020), (10, 8130618), (12, 6775515), (15, 5420412), (18, 4517010), (20, 4065309), (27, 3011340), (30, 2710206), (31, 2622780), (36, 2258505), (45, 1806804), (54, 1505670), (60, 1355103), (62, 1311390), (81, 1003780), (90, 903402), (93, 874260), (108, 752835), (124, 655695), (135, 602268), (155, 524556), (162, 501890), (180, 451701), (186, 437130), (270, 301134), (279, 291420), (310, 262278), (324, 250945), (372, 218565), (405, 200756), (465, 174852), (540, 150567), (558, 145710), (620, 131139), (810, 100378), (837, 97140), (930, 87426), (1116, 72855), (1395, 58284), (1619, 50220), (1620, 50189), (1674, 48570), (1860, 43713), (2511, 32380), (2790, 29142), (3238, 25110), (3348, 24285), (4185, 19428), (4857, 16740), (5022, 16190), (5580, 14571), (6476, 12555), (8095, 10044), (8370, 9714)]