19188081

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^2$

素因数の和:238

約数の個数: 36

約数和(自身を含む): 32145360

約数和(自身を除く): 12957279

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 101, 171, 209, 303, 627, 909, 1111, 1881, 1919, 3333, 5757, 9999, 10201, 17271, 21109, 30603, 63327, 91809, 112211, 189981, 193819, 336633, 581457, 1009899, 1744371, 2132009, 6396027, 19188081]

約数ペア:

[(1, 19188081), (3, 6396027), (9, 2132009), (11, 1744371), (19, 1009899), (33, 581457), (57, 336633), (99, 193819), (101, 189981), (171, 112211), (209, 91809), (303, 63327), (627, 30603), (909, 21109), (1111, 17271), (1881, 10201), (1919, 9999), (3333, 5757)]