20218680

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{193}}^1$

素因数の和:310

約数の個数: 128

約数和(自身を含む): 68443200

約数和(自身を除く): 48224520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 97, 108, 120, 135, 180, 193, 194, 216, 270, 291, 360, 386, 388, 485, 540, 579, 582, 772, 776, 873, 965, 970, 1080, 1158, 1164, 1455, 1544, 1737, 1746, 1930, 1940, 2316, 2328, 2619, 2895, 2910, 3474, 3492, 3860, 3880, 4365, 4632, 5211, 5238, 5790, 5820, 6948, 6984, 7720, 8685, 8730, 10422, 10476, 11580, 11640, 13095, 13896, 17370, 17460, 18721, 20844, 20952, 23160, 26055, 26190, 34740, 34920, 37442, 41688, 52110, 52380, 56163, 69480, 74884, 93605, 104220, 104760, 112326, 149768, 168489, 187210, 208440, 224652, 280815, 336978, 374420, 449304, 505467, 561630, 673956, 748840, 842445, 1010934, 1123260, 1347912, 1684890, 2021868, 2246520, 2527335, 3369780, 4043736, 5054670, 6739560, 10109340, 20218680]

約数ペア:

[(1, 20218680), (2, 10109340), (3, 6739560), (4, 5054670), (5, 4043736), (6, 3369780), (8, 2527335), (9, 2246520), (10, 2021868), (12, 1684890), (15, 1347912), (18, 1123260), (20, 1010934), (24, 842445), (27, 748840), (30, 673956), (36, 561630), (40, 505467), (45, 449304), (54, 374420), (60, 336978), (72, 280815), (90, 224652), (97, 208440), (108, 187210), (120, 168489), (135, 149768), (180, 112326), (193, 104760), (194, 104220), (216, 93605), (270, 74884), (291, 69480), (360, 56163), (386, 52380), (388, 52110), (485, 41688), (540, 37442), (579, 34920), (582, 34740), (772, 26190), (776, 26055), (873, 23160), (965, 20952), (970, 20844), (1080, 18721), (1158, 17460), (1164, 17370), (1455, 13896), (1544, 13095), (1737, 11640), (1746, 11580), (1930, 10476), (1940, 10422), (2316, 8730), (2328, 8685), (2619, 7720), (2895, 6984), (2910, 6948), (3474, 5820), (3492, 5790), (3860, 5238), (3880, 5211), (4365, 4632)]