81406620

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1621}}^1$

素因数の和:1673

約数の個数: 120

約数和(自身を含む): 263776128

約数和(自身を除く): 182369508

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, 1620, 1621, 1674, 1860, 2511, 2790, 3242, 3348, 4185, 4863, 5022, 5580, 6484, 8105, 8370, 9726, 10044, 12555, 14589, 16210, 16740, 19452, 24315, 25110, 29178, 32420, 43767, 48630, 50220, 50251, 58356, 72945, 87534, 97260, 100502, 131301, 145890, 150753, 175068, 201004, 218835, 251255, 262602, 291780, 301506, 437670, 452259, 502510, 525204, 603012, 656505, 753765, 875340, 904518, 1005020, 1313010, 1356777, 1507530, 1809036, 2261295, 2626020, 2713554, 3015060, 4070331, 4522590, 5427108, 6783885, 8140662, 9045180, 13567770, 16281324, 20351655, 27135540, 40703310, 81406620]

約数ペア:

[(1, 81406620), (2, 40703310), (3, 27135540), (4, 20351655), (5, 16281324), (6, 13567770), (9, 9045180), (10, 8140662), (12, 6783885), (15, 5427108), (18, 4522590), (20, 4070331), (27, 3015060), (30, 2713554), (31, 2626020), (36, 2261295), (45, 1809036), (54, 1507530), (60, 1356777), (62, 1313010), (81, 1005020), (90, 904518), (93, 875340), (108, 753765), (124, 656505), (135, 603012), (155, 525204), (162, 502510), (180, 452259), (186, 437670), (270, 301506), (279, 291780), (310, 262602), (324, 251255), (372, 218835), (405, 201004), (465, 175068), (540, 150753), (558, 145890), (620, 131301), (810, 100502), (837, 97260), (930, 87534), (1116, 72945), (1395, 58356), (1620, 50251), (1621, 50220), (1674, 48630), (1860, 43767), (2511, 32420), (2790, 29178), (3242, 25110), (3348, 24315), (4185, 19452), (4863, 16740), (5022, 16210), (5580, 14589), (6484, 12555), (8105, 10044), (8370, 9726)]