19974856

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:250

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 23570744

約数列:

[1, 2, 4, 8, 11, 22, 23, 44, 46, 71, 88, 92, 139, 142, 184, 253, 278, 284, 506, 556, 568, 781, 1012, 1112, 1529, 1562, 1633, 2024, 3058, 3124, 3197, 3266, 6116, 6248, 6394, 6532, 9869, 12232, 12788, 13064, 17963, 19738, 25576, 35167, 35926, 39476, 70334, 71852, 78952, 108559, 140668, 143704, 217118, 226987, 281336, 434236, 453974, 868472, 907948, 1815896, 2496857, 4993714, 9987428, 19974856]

約数ペア:

[(1, 19974856), (2, 9987428), (4, 4993714), (8, 2496857), (11, 1815896), (22, 907948), (23, 868472), (44, 453974), (46, 434236), (71, 281336), (88, 226987), (92, 217118), (139, 143704), (142, 140668), (184, 108559), (253, 78952), (278, 71852), (284, 70334), (506, 39476), (556, 35926), (568, 35167), (781, 25576), (1012, 19738), (1112, 17963), (1529, 13064), (1562, 12788), (1633, 12232), (2024, 9869), (3058, 6532), (3124, 6394), (3197, 6248), (3266, 6116)]