19790290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:187

約数の個数: 64

約数和(自身を含む): 40642560

約数和(自身を除く): 20852270

約数列:

[1, 2, 5, 10, 13, 26, 41, 47, 65, 79, 82, 94, 130, 158, 205, 235, 395, 410, 470, 533, 611, 790, 1027, 1066, 1222, 1927, 2054, 2665, 3055, 3239, 3713, 3854, 5135, 5330, 6110, 6478, 7426, 9635, 10270, 16195, 18565, 19270, 25051, 32390, 37130, 42107, 48269, 50102, 84214, 96538, 125255, 152233, 210535, 241345, 250510, 304466, 421070, 482690, 761165, 1522330, 1979029, 3958058, 9895145, 19790290]

約数ペア:

[(1, 19790290), (2, 9895145), (5, 3958058), (10, 1979029), (13, 1522330), (26, 761165), (41, 482690), (47, 421070), (65, 304466), (79, 250510), (82, 241345), (94, 210535), (130, 152233), (158, 125255), (205, 96538), (235, 84214), (395, 50102), (410, 48269), (470, 42107), (533, 37130), (611, 32390), (790, 25051), (1027, 19270), (1066, 18565), (1222, 16195), (1927, 10270), (2054, 9635), (2665, 7426), (3055, 6478), (3239, 6110), (3713, 5330), (3854, 5135)]