20397906

素因数分解:

$2^1\times 3^5\times {\mathrm{19}}^1\times {\mathrm{47}}^2$

素因数の和:130

約数の個数: 72

約数和(自身を含む): 49292880

約数和(自身を除く): 28894974

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 47, 54, 57, 81, 94, 114, 141, 162, 171, 243, 282, 342, 423, 486, 513, 846, 893, 1026, 1269, 1539, 1786, 2209, 2538, 2679, 3078, 3807, 4418, 4617, 5358, 6627, 7614, 8037, 9234, 11421, 13254, 16074, 19881, 22842, 24111, 39762, 41971, 48222, 59643, 72333, 83942, 119286, 125913, 144666, 178929, 216999, 251826, 357858, 377739, 433998, 536787, 755478, 1073574, 1133217, 2266434, 3399651, 6799302, 10198953, 20397906]

約数ペア:

[(1, 20397906), (2, 10198953), (3, 6799302), (6, 3399651), (9, 2266434), (18, 1133217), (19, 1073574), (27, 755478), (38, 536787), (47, 433998), (54, 377739), (57, 357858), (81, 251826), (94, 216999), (114, 178929), (141, 144666), (162, 125913), (171, 119286), (243, 83942), (282, 72333), (342, 59643), (423, 48222), (486, 41971), (513, 39762), (846, 24111), (893, 22842), (1026, 19881), (1269, 16074), (1539, 13254), (1786, 11421), (2209, 9234), (2538, 8037), (2679, 7614), (3078, 6627), (3807, 5358), (4418, 4617)]