81487620

素因数分解:

$2^2\times 3^{11}\times 5^1\times {\mathrm{23}}^1$

素因数の和:65

約数の個数: 144

約数和(自身を含む): 267845760

約数和(自身を除く): 186358140

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 27, 30, 36, 45, 46, 54, 60, 69, 81, 90, 92, 108, 115, 135, 138, 162, 180, 207, 230, 243, 270, 276, 324, 345, 405, 414, 460, 486, 540, 621, 690, 729, 810, 828, 972, 1035, 1215, 1242, 1380, 1458, 1620, 1863, 2070, 2187, 2430, 2484, 2916, 3105, 3645, 3726, 4140, 4374, 4860, 5589, 6210, 6561, 7290, 7452, 8748, 9315, 10935, 11178, 12420, 13122, 14580, 16767, 18630, 19683, 21870, 22356, 26244, 27945, 32805, 33534, 37260, 39366, 43740, 50301, 55890, 59049, 65610, 67068, 78732, 83835, 98415, 100602, 111780, 118098, 131220, 150903, 167670, 177147, 196830, 201204, 236196, 251505, 295245, 301806, 335340, 354294, 393660, 452709, 503010, 590490, 603612, 708588, 754515, 885735, 905418, 1006020, 1180980, 1358127, 1509030, 1771470, 1810836, 2263545, 2716254, 3018060, 3542940, 4074381, 4527090, 5432508, 6790635, 8148762, 9054180, 13581270, 16297524, 20371905, 27162540, 40743810, 81487620]

約数ペア:

[(1, 81487620), (2, 40743810), (3, 27162540), (4, 20371905), (5, 16297524), (6, 13581270), (9, 9054180), (10, 8148762), (12, 6790635), (15, 5432508), (18, 4527090), (20, 4074381), (23, 3542940), (27, 3018060), (30, 2716254), (36, 2263545), (45, 1810836), (46, 1771470), (54, 1509030), (60, 1358127), (69, 1180980), (81, 1006020), (90, 905418), (92, 885735), (108, 754515), (115, 708588), (135, 603612), (138, 590490), (162, 503010), (180, 452709), (207, 393660), (230, 354294), (243, 335340), (270, 301806), (276, 295245), (324, 251505), (345, 236196), (405, 201204), (414, 196830), (460, 177147), (486, 167670), (540, 150903), (621, 131220), (690, 118098), (729, 111780), (810, 100602), (828, 98415), (972, 83835), (1035, 78732), (1215, 67068), (1242, 65610), (1380, 59049), (1458, 55890), (1620, 50301), (1863, 43740), (2070, 39366), (2187, 37260), (2430, 33534), (2484, 32805), (2916, 27945), (3105, 26244), (3645, 22356), (3726, 21870), (4140, 19683), (4374, 18630), (4860, 16767), (5589, 14580), (6210, 13122), (6561, 12420), (7290, 11178), (7452, 10935), (8748, 9315)]