20525835

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{263}}^1$

素因数の和:336

約数の個数: 48

約数和(自身を含む): 37078272

約数和(自身を除く): 16552437

約数列:

[1, 3, 5, 11, 15, 33, 43, 55, 121, 129, 165, 215, 263, 363, 473, 605, 645, 789, 1315, 1419, 1815, 2365, 2893, 3945, 5203, 7095, 8679, 11309, 14465, 15609, 26015, 31823, 33927, 43395, 56545, 78045, 95469, 124399, 159115, 169635, 373197, 477345, 621995, 1368389, 1865985, 4105167, 6841945, 20525835]

約数ペア:

[(1, 20525835), (3, 6841945), (5, 4105167), (11, 1865985), (15, 1368389), (33, 621995), (43, 477345), (55, 373197), (121, 169635), (129, 159115), (165, 124399), (215, 95469), (263, 78045), (363, 56545), (473, 43395), (605, 33927), (645, 31823), (789, 26015), (1315, 15609), (1419, 14465), (1815, 11309), (2365, 8679), (2893, 7095), (3945, 5203)]