81498560

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{137}}^1$

素因数の和:191

約数の個数: 168

約数和(自身を含む): 230922576

約数和(自身を除く): 149424016

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 32, 40, 44, 52, 55, 64, 65, 80, 88, 104, 110, 130, 137, 143, 160, 169, 176, 208, 220, 260, 274, 286, 320, 338, 352, 416, 440, 520, 548, 572, 676, 685, 704, 715, 832, 845, 880, 1040, 1096, 1144, 1352, 1370, 1430, 1507, 1690, 1760, 1781, 1859, 2080, 2192, 2288, 2704, 2740, 2860, 3014, 3380, 3520, 3562, 3718, 4160, 4384, 4576, 5408, 5480, 5720, 6028, 6760, 7124, 7436, 7535, 8768, 8905, 9152, 9295, 10816, 10960, 11440, 12056, 13520, 14248, 14872, 15070, 17810, 18590, 19591, 21920, 22880, 23153, 24112, 27040, 28496, 29744, 30140, 35620, 37180, 39182, 43840, 45760, 46306, 48224, 54080, 56992, 59488, 60280, 71240, 74360, 78364, 92612, 96448, 97955, 113984, 115765, 118976, 120560, 142480, 148720, 156728, 185224, 195910, 231530, 241120, 254683, 284960, 297440, 313456, 370448, 391820, 463060, 482240, 509366, 569920, 594880, 626912, 740896, 783640, 926120, 1018732, 1253824, 1273415, 1481792, 1567280, 1852240, 2037464, 2546830, 3134560, 3704480, 4074928, 5093660, 6269120, 7408960, 8149856, 10187320, 16299712, 20374640, 40749280, 81498560]

約数ペア:

[(1, 81498560), (2, 40749280), (4, 20374640), (5, 16299712), (8, 10187320), (10, 8149856), (11, 7408960), (13, 6269120), (16, 5093660), (20, 4074928), (22, 3704480), (26, 3134560), (32, 2546830), (40, 2037464), (44, 1852240), (52, 1567280), (55, 1481792), (64, 1273415), (65, 1253824), (80, 1018732), (88, 926120), (104, 783640), (110, 740896), (130, 626912), (137, 594880), (143, 569920), (160, 509366), (169, 482240), (176, 463060), (208, 391820), (220, 370448), (260, 313456), (274, 297440), (286, 284960), (320, 254683), (338, 241120), (352, 231530), (416, 195910), (440, 185224), (520, 156728), (548, 148720), (572, 142480), (676, 120560), (685, 118976), (704, 115765), (715, 113984), (832, 97955), (845, 96448), (880, 92612), (1040, 78364), (1096, 74360), (1144, 71240), (1352, 60280), (1370, 59488), (1430, 56992), (1507, 54080), (1690, 48224), (1760, 46306), (1781, 45760), (1859, 43840), (2080, 39182), (2192, 37180), (2288, 35620), (2704, 30140), (2740, 29744), (2860, 28496), (3014, 27040), (3380, 24112), (3520, 23153), (3562, 22880), (3718, 21920), (4160, 19591), (4384, 18590), (4576, 17810), (5408, 15070), (5480, 14872), (5720, 14248), (6028, 13520), (6760, 12056), (7124, 11440), (7436, 10960), (7535, 10816), (8768, 9295), (8905, 9152)]