20512948

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{263}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 40449024

約数和(自身を除く): 19936076

約数列:

[1, 2, 4, 17, 31, 34, 37, 62, 68, 74, 124, 148, 263, 526, 527, 629, 1052, 1054, 1147, 1258, 2108, 2294, 2516, 4471, 4588, 8153, 8942, 9731, 16306, 17884, 19462, 19499, 32612, 38924, 38998, 77996, 138601, 165427, 277202, 301661, 330854, 554404, 603322, 661708, 1206644, 5128237, 10256474, 20512948]

約数ペア:

[(1, 20512948), (2, 10256474), (4, 5128237), (17, 1206644), (31, 661708), (34, 603322), (37, 554404), (62, 330854), (68, 301661), (74, 277202), (124, 165427), (148, 138601), (263, 77996), (526, 38998), (527, 38924), (629, 32612), (1052, 19499), (1054, 19462), (1147, 17884), (1258, 16306), (2108, 9731), (2294, 8942), (2516, 8153), (4471, 4588)]