19897101

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{101}}^1$

素因数の和:226

約数の個数: 48

約数和(自身を含む): 34369920

約数和(自身を除く): 14472819

約数列:

[1, 3, 7, 9, 21, 53, 59, 63, 101, 159, 177, 303, 371, 413, 477, 531, 707, 909, 1113, 1239, 2121, 3127, 3339, 3717, 5353, 5959, 6363, 9381, 16059, 17877, 21889, 28143, 37471, 41713, 48177, 53631, 65667, 112413, 125139, 197001, 315827, 337239, 375417, 947481, 2210789, 2842443, 6632367, 19897101]

約数ペア:

[(1, 19897101), (3, 6632367), (7, 2842443), (9, 2210789), (21, 947481), (53, 375417), (59, 337239), (63, 315827), (101, 197001), (159, 125139), (177, 112413), (303, 65667), (371, 53631), (413, 48177), (477, 41713), (531, 37471), (707, 28143), (909, 21889), (1113, 17877), (1239, 16059), (2121, 9381), (3127, 6363), (3339, 5959), (3717, 5353)]