19782880

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9511}}^1$

素因数の和:9539

約数の個数: 48

約数和(自身を含む): 50337504

約数和(自身を除く): 30554624

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9511, 19022, 38044, 47555, 76088, 95110, 123643, 152176, 190220, 247286, 304352, 380440, 494572, 618215, 760880, 989144, 1236430, 1521760, 1978288, 2472860, 3956576, 4945720, 9891440, 19782880]

約数ペア:

[(1, 19782880), (2, 9891440), (4, 4945720), (5, 3956576), (8, 2472860), (10, 1978288), (13, 1521760), (16, 1236430), (20, 989144), (26, 760880), (32, 618215), (40, 494572), (52, 380440), (65, 304352), (80, 247286), (104, 190220), (130, 152176), (160, 123643), (208, 95110), (260, 76088), (416, 47555), (520, 38044), (1040, 19022), (2080, 9511)]