19871992

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{11447}}^1$

素因数の和:11491

約数の個数: 32

約数和(自身を含む): 43960320

約数和(自身を除く): 24088328

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 124, 217, 248, 434, 868, 1736, 11447, 22894, 45788, 80129, 91576, 160258, 320516, 354857, 641032, 709714, 1419428, 2483999, 2838856, 4967998, 9935996, 19871992]

約数ペア:

[(1, 19871992), (2, 9935996), (4, 4967998), (7, 2838856), (8, 2483999), (14, 1419428), (28, 709714), (31, 641032), (56, 354857), (62, 320516), (124, 160258), (217, 91576), (248, 80129), (434, 45788), (868, 22894), (1736, 11447)]