81968880

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{503}}^1$

素因数の和:623

約数の個数: 160

約数和(自身を含む): 293981184

約数和(自身を除く): 212012304

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 97, 105, 112, 120, 140, 168, 194, 210, 240, 280, 291, 336, 388, 420, 485, 503, 560, 582, 679, 776, 840, 970, 1006, 1164, 1358, 1455, 1509, 1552, 1680, 1940, 2012, 2037, 2328, 2515, 2716, 2910, 3018, 3395, 3521, 3880, 4024, 4074, 4656, 5030, 5432, 5820, 6036, 6790, 7042, 7545, 7760, 8048, 8148, 10060, 10185, 10563, 10864, 11640, 12072, 13580, 14084, 15090, 16296, 17605, 20120, 20370, 21126, 23280, 24144, 27160, 28168, 30180, 32592, 35210, 40240, 40740, 42252, 48791, 52815, 54320, 56336, 60360, 70420, 81480, 84504, 97582, 105630, 120720, 140840, 146373, 162960, 169008, 195164, 211260, 243955, 281680, 292746, 341537, 390328, 422520, 487910, 585492, 683074, 731865, 780656, 845040, 975820, 1024611, 1170984, 1366148, 1463730, 1707685, 1951640, 2049222, 2341968, 2732296, 2927460, 3415370, 3903280, 4098444, 5123055, 5464592, 5854920, 6830740, 8196888, 10246110, 11709840, 13661480, 16393776, 20492220, 27322960, 40984440, 81968880]

約数ペア:

[(1, 81968880), (2, 40984440), (3, 27322960), (4, 20492220), (5, 16393776), (6, 13661480), (7, 11709840), (8, 10246110), (10, 8196888), (12, 6830740), (14, 5854920), (15, 5464592), (16, 5123055), (20, 4098444), (21, 3903280), (24, 3415370), (28, 2927460), (30, 2732296), (35, 2341968), (40, 2049222), (42, 1951640), (48, 1707685), (56, 1463730), (60, 1366148), (70, 1170984), (80, 1024611), (84, 975820), (97, 845040), (105, 780656), (112, 731865), (120, 683074), (140, 585492), (168, 487910), (194, 422520), (210, 390328), (240, 341537), (280, 292746), (291, 281680), (336, 243955), (388, 211260), (420, 195164), (485, 169008), (503, 162960), (560, 146373), (582, 140840), (679, 120720), (776, 105630), (840, 97582), (970, 84504), (1006, 81480), (1164, 70420), (1358, 60360), (1455, 56336), (1509, 54320), (1552, 52815), (1680, 48791), (1940, 42252), (2012, 40740), (2037, 40240), (2328, 35210), (2515, 32592), (2716, 30180), (2910, 28168), (3018, 27160), (3395, 24144), (3521, 23280), (3880, 21126), (4024, 20370), (4074, 20120), (4656, 17605), (5030, 16296), (5432, 15090), (5820, 14084), (6036, 13580), (6790, 12072), (7042, 11640), (7545, 10864), (7760, 10563), (8048, 10185), (8148, 10060)]