19907360

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11311}}^1$

素因数の和:11337

約数の個数: 48

約数和(自身を含む): 51311232

約数和(自身を除く): 31403872

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 11311, 22622, 45244, 56555, 90488, 113110, 124421, 180976, 226220, 248842, 361952, 452440, 497684, 622105, 904880, 995368, 1244210, 1809760, 1990736, 2488420, 3981472, 4976840, 9953680, 19907360]

約数ペア:

[(1, 19907360), (2, 9953680), (4, 4976840), (5, 3981472), (8, 2488420), (10, 1990736), (11, 1809760), (16, 1244210), (20, 995368), (22, 904880), (32, 622105), (40, 497684), (44, 452440), (55, 361952), (80, 248842), (88, 226220), (110, 180976), (160, 124421), (176, 113110), (220, 90488), (352, 56555), (440, 45244), (880, 22622), (1760, 11311)]