11990140

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{227}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 26812800

約数和(自身を除く): 14822660

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 139, 190, 227, 278, 380, 454, 556, 695, 908, 1135, 1390, 2270, 2641, 2780, 4313, 4540, 5282, 8626, 10564, 13205, 17252, 21565, 26410, 31553, 43130, 52820, 63106, 86260, 126212, 157765, 315530, 599507, 631060, 1199014, 2398028, 2997535, 5995070, 11990140]

約数ペア:

[(1, 11990140), (2, 5995070), (4, 2997535), (5, 2398028), (10, 1199014), (19, 631060), (20, 599507), (38, 315530), (76, 157765), (95, 126212), (139, 86260), (190, 63106), (227, 52820), (278, 43130), (380, 31553), (454, 26410), (556, 21565), (695, 17252), (908, 13205), (1135, 10564), (1390, 8626), (2270, 5282), (2641, 4540), (2780, 4313)]