20952080

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{193}}^1$

素因数の和:288

約数の個数: 80

約数和(自身を含む): 51960960

約数和(自身を除く): 31008880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 59, 80, 92, 115, 118, 184, 193, 230, 236, 295, 368, 386, 460, 472, 590, 772, 920, 944, 965, 1180, 1357, 1544, 1840, 1930, 2360, 2714, 3088, 3860, 4439, 4720, 5428, 6785, 7720, 8878, 10856, 11387, 13570, 15440, 17756, 21712, 22195, 22774, 27140, 35512, 44390, 45548, 54280, 56935, 71024, 88780, 91096, 108560, 113870, 177560, 182192, 227740, 261901, 355120, 455480, 523802, 910960, 1047604, 1309505, 2095208, 2619010, 4190416, 5238020, 10476040, 20952080]

約数ペア:

[(1, 20952080), (2, 10476040), (4, 5238020), (5, 4190416), (8, 2619010), (10, 2095208), (16, 1309505), (20, 1047604), (23, 910960), (40, 523802), (46, 455480), (59, 355120), (80, 261901), (92, 227740), (115, 182192), (118, 177560), (184, 113870), (193, 108560), (230, 91096), (236, 88780), (295, 71024), (368, 56935), (386, 54280), (460, 45548), (472, 44390), (590, 35512), (772, 27140), (920, 22774), (944, 22195), (965, 21712), (1180, 17756), (1357, 15440), (1544, 13570), (1840, 11387), (1930, 10856), (2360, 8878), (2714, 7720), (3088, 6785), (3860, 5428), (4439, 4720)]