81748240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{277}}^1$

素因数の和:345

約数の個数: 160

約数和(自身を含む): 238270464

約数和(自身を除く): 156522224

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 31, 34, 35, 40, 56, 62, 68, 70, 80, 85, 112, 119, 124, 136, 140, 155, 170, 217, 238, 248, 272, 277, 280, 310, 340, 434, 476, 496, 527, 554, 560, 595, 620, 680, 868, 952, 1054, 1085, 1108, 1190, 1240, 1360, 1385, 1736, 1904, 1939, 2108, 2170, 2216, 2380, 2480, 2635, 2770, 3472, 3689, 3878, 4216, 4340, 4432, 4709, 4760, 5270, 5540, 7378, 7756, 8432, 8587, 8680, 9418, 9520, 9695, 10540, 11080, 14756, 15512, 17174, 17360, 18445, 18836, 19390, 21080, 22160, 23545, 29512, 31024, 32963, 34348, 36890, 37672, 38780, 42160, 42935, 47090, 59024, 60109, 65926, 68696, 73780, 75344, 77560, 85870, 94180, 120218, 131852, 137392, 145979, 147560, 155120, 164815, 171740, 188360, 240436, 263704, 291958, 295120, 300545, 329630, 343480, 376720, 480872, 527408, 583916, 601090, 659260, 686960, 729895, 961744, 1021853, 1167832, 1202180, 1318520, 1459790, 2043706, 2335664, 2404360, 2637040, 2919580, 4087412, 4808720, 5109265, 5839160, 8174824, 10218530, 11678320, 16349648, 20437060, 40874120, 81748240]

約数ペア:

[(1, 81748240), (2, 40874120), (4, 20437060), (5, 16349648), (7, 11678320), (8, 10218530), (10, 8174824), (14, 5839160), (16, 5109265), (17, 4808720), (20, 4087412), (28, 2919580), (31, 2637040), (34, 2404360), (35, 2335664), (40, 2043706), (56, 1459790), (62, 1318520), (68, 1202180), (70, 1167832), (80, 1021853), (85, 961744), (112, 729895), (119, 686960), (124, 659260), (136, 601090), (140, 583916), (155, 527408), (170, 480872), (217, 376720), (238, 343480), (248, 329630), (272, 300545), (277, 295120), (280, 291958), (310, 263704), (340, 240436), (434, 188360), (476, 171740), (496, 164815), (527, 155120), (554, 147560), (560, 145979), (595, 137392), (620, 131852), (680, 120218), (868, 94180), (952, 85870), (1054, 77560), (1085, 75344), (1108, 73780), (1190, 68696), (1240, 65926), (1360, 60109), (1385, 59024), (1736, 47090), (1904, 42935), (1939, 42160), (2108, 38780), (2170, 37672), (2216, 36890), (2380, 34348), (2480, 32963), (2635, 31024), (2770, 29512), (3472, 23545), (3689, 22160), (3878, 21080), (4216, 19390), (4340, 18836), (4432, 18445), (4709, 17360), (4760, 17174), (5270, 15512), (5540, 14756), (7378, 11080), (7756, 10540), (8432, 9695), (8587, 9520), (8680, 9418)]