20763580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{541}}^1$

素因数の和:670

約数の個数: 48

約数和(自身を含む): 46438560

約数和(自身を除く): 25674980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 101, 190, 202, 380, 404, 505, 541, 1010, 1082, 1919, 2020, 2164, 2705, 3838, 5410, 7676, 9595, 10279, 10820, 19190, 20558, 38380, 41116, 51395, 54641, 102790, 109282, 205580, 218564, 273205, 546410, 1038179, 1092820, 2076358, 4152716, 5190895, 10381790, 20763580]

約数ペア:

[(1, 20763580), (2, 10381790), (4, 5190895), (5, 4152716), (10, 2076358), (19, 1092820), (20, 1038179), (38, 546410), (76, 273205), (95, 218564), (101, 205580), (190, 109282), (202, 102790), (380, 54641), (404, 51395), (505, 41116), (541, 38380), (1010, 20558), (1082, 19190), (1919, 10820), (2020, 10279), (2164, 9595), (2705, 7676), (3838, 5410)]