21865755

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{1039}}^1$

素因数の和:1131

約数の個数: 32

約数和(自身を含む): 37140480

約数和(自身を除く): 15274725

約数列:

[1, 3, 5, 15, 23, 61, 69, 115, 183, 305, 345, 915, 1039, 1403, 3117, 4209, 5195, 7015, 15585, 21045, 23897, 63379, 71691, 119485, 190137, 316895, 358455, 950685, 1457717, 4373151, 7288585, 21865755]

約数ペア:

[(1, 21865755), (3, 7288585), (5, 4373151), (15, 1457717), (23, 950685), (61, 358455), (69, 316895), (115, 190137), (183, 119485), (305, 71691), (345, 63379), (915, 23897), (1039, 21045), (1403, 15585), (3117, 7015), (4209, 5195)]