40840020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{563}}^1$

素因数の和:622

約数の個数: 144

約数和(自身を含む): 137958912

約数和(自身を除く): 97118892

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 31, 36, 39, 45, 52, 60, 62, 65, 78, 90, 93, 117, 124, 130, 155, 156, 180, 186, 195, 234, 260, 279, 310, 372, 390, 403, 465, 468, 558, 563, 585, 620, 780, 806, 930, 1116, 1126, 1170, 1209, 1395, 1612, 1689, 1860, 2015, 2252, 2340, 2418, 2790, 2815, 3378, 3627, 4030, 4836, 5067, 5580, 5630, 6045, 6756, 7254, 7319, 8060, 8445, 10134, 11260, 12090, 14508, 14638, 16890, 17453, 18135, 20268, 21957, 24180, 25335, 29276, 33780, 34906, 36270, 36595, 43914, 50670, 52359, 65871, 69812, 72540, 73190, 87265, 87828, 101340, 104718, 109785, 131742, 146380, 157077, 174530, 209436, 219570, 226889, 261795, 263484, 314154, 329355, 349060, 439140, 453778, 523590, 628308, 658710, 680667, 785385, 907556, 1047180, 1134445, 1317420, 1361334, 1570770, 2042001, 2268890, 2722668, 3141540, 3403335, 4084002, 4537780, 6806670, 8168004, 10210005, 13613340, 20420010, 40840020]

約数ペア:

[(1, 40840020), (2, 20420010), (3, 13613340), (4, 10210005), (5, 8168004), (6, 6806670), (9, 4537780), (10, 4084002), (12, 3403335), (13, 3141540), (15, 2722668), (18, 2268890), (20, 2042001), (26, 1570770), (30, 1361334), (31, 1317420), (36, 1134445), (39, 1047180), (45, 907556), (52, 785385), (60, 680667), (62, 658710), (65, 628308), (78, 523590), (90, 453778), (93, 439140), (117, 349060), (124, 329355), (130, 314154), (155, 263484), (156, 261795), (180, 226889), (186, 219570), (195, 209436), (234, 174530), (260, 157077), (279, 146380), (310, 131742), (372, 109785), (390, 104718), (403, 101340), (465, 87828), (468, 87265), (558, 73190), (563, 72540), (585, 69812), (620, 65871), (780, 52359), (806, 50670), (930, 43914), (1116, 36595), (1126, 36270), (1170, 34906), (1209, 33780), (1395, 29276), (1612, 25335), (1689, 24180), (1860, 21957), (2015, 20268), (2252, 18135), (2340, 17453), (2418, 16890), (2790, 14638), (2815, 14508), (3378, 12090), (3627, 11260), (4030, 10134), (4836, 8445), (5067, 8060), (5580, 7319), (5630, 7254), (6045, 6756)]