78642140

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{206953}}^1$

素因数の和:206981

約数の個数: 24

約数和(自身を含む): 173841360

約数和(自身を除く): 95199220

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 206953, 413906, 827812, 1034765, 2069530, 3932107, 4139060, 7864214, 15728428, 19660535, 39321070, 78642140]

約数ペア:

[(1, 78642140), (2, 39321070), (4, 19660535), (5, 15728428), (10, 7864214), (19, 4139060), (20, 3932107), (38, 2069530), (76, 1034765), (95, 827812), (190, 413906), (380, 206953)]