19162540

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{113}}^1\times {\mathrm{139}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 41559840

約数和(自身を除く): 22397300

約数列:

[1, 2, 4, 5, 10, 20, 61, 113, 122, 139, 226, 244, 278, 305, 452, 556, 565, 610, 695, 1130, 1220, 1390, 2260, 2780, 6893, 8479, 13786, 15707, 16958, 27572, 31414, 33916, 34465, 42395, 62828, 68930, 78535, 84790, 137860, 157070, 169580, 314140, 958127, 1916254, 3832508, 4790635, 9581270, 19162540]

約数ペア:

[(1, 19162540), (2, 9581270), (4, 4790635), (5, 3832508), (10, 1916254), (20, 958127), (61, 314140), (113, 169580), (122, 157070), (139, 137860), (226, 84790), (244, 78535), (278, 68930), (305, 62828), (452, 42395), (556, 34465), (565, 33916), (610, 31414), (695, 27572), (1130, 16958), (1220, 15707), (1390, 13786), (2260, 8479), (2780, 6893)]