19163984

素因数分解:

$2^4\times 7^1\times {\mathrm{397}}^1\times {\mathrm{431}}^1$

素因数の和:843

約数の個数: 40

約数和(自身を含む): 42640128

約数和(自身を除く): 23476144

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 397, 431, 794, 862, 1588, 1724, 2779, 3017, 3176, 3448, 5558, 6034, 6352, 6896, 11116, 12068, 22232, 24136, 44464, 48272, 171107, 342214, 684428, 1197749, 1368856, 2395498, 2737712, 4790996, 9581992, 19163984]

約数ペア:

[(1, 19163984), (2, 9581992), (4, 4790996), (7, 2737712), (8, 2395498), (14, 1368856), (16, 1197749), (28, 684428), (56, 342214), (112, 171107), (397, 48272), (431, 44464), (794, 24136), (862, 22232), (1588, 12068), (1724, 11116), (2779, 6896), (3017, 6352), (3176, 6034), (3448, 5558)]