20888505

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2221}}^1$

素因数の和:2262

約数の個数: 48

約数和(自身を含む): 41595840

約数和(自身を除く): 20707335

約数列:

[1, 3, 5, 9, 11, 15, 19, 33, 45, 55, 57, 95, 99, 165, 171, 209, 285, 495, 627, 855, 1045, 1881, 2221, 3135, 6663, 9405, 11105, 19989, 24431, 33315, 42199, 73293, 99945, 122155, 126597, 210995, 219879, 366465, 379791, 464189, 632985, 1099395, 1392567, 1898955, 2320945, 4177701, 6962835, 20888505]

約数ペア:

[(1, 20888505), (3, 6962835), (5, 4177701), (9, 2320945), (11, 1898955), (15, 1392567), (19, 1099395), (33, 632985), (45, 464189), (55, 379791), (57, 366465), (95, 219879), (99, 210995), (165, 126597), (171, 122155), (209, 99945), (285, 73293), (495, 42199), (627, 33315), (855, 24431), (1045, 19989), (1881, 11105), (2221, 9405), (3135, 6663)]