20900516

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{857}}^1$

素因数の和:948

約数の個数: 48

約数和(自身を含む): 45741696

約数和(自身を除く): 24841180

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 67, 91, 134, 182, 268, 364, 469, 857, 871, 938, 1714, 1742, 1876, 3428, 3484, 5999, 6097, 11141, 11998, 12194, 22282, 23996, 24388, 44564, 57419, 77987, 114838, 155974, 229676, 311948, 401933, 746447, 803866, 1492894, 1607732, 2985788, 5225129, 10450258, 20900516]

約数ペア:

[(1, 20900516), (2, 10450258), (4, 5225129), (7, 2985788), (13, 1607732), (14, 1492894), (26, 803866), (28, 746447), (52, 401933), (67, 311948), (91, 229676), (134, 155974), (182, 114838), (268, 77987), (364, 57419), (469, 44564), (857, 24388), (871, 23996), (938, 22282), (1714, 12194), (1742, 11998), (1876, 11141), (3428, 6097), (3484, 5999)]