19801341

素因数分解:

$3^5\times 7^2\times {\mathrm{1663}}^1$

素因数の和:1692

約数の個数: 36

約数和(自身を含む): 34524672

約数和(自身を除く): 14723331

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 243, 441, 567, 1323, 1663, 1701, 3969, 4989, 11641, 11907, 14967, 34923, 44901, 81487, 104769, 134703, 244461, 314307, 404109, 733383, 942921, 2200149, 2828763, 6600447, 19801341]

約数ペア:

[(1, 19801341), (3, 6600447), (7, 2828763), (9, 2200149), (21, 942921), (27, 733383), (49, 404109), (63, 314307), (81, 244461), (147, 134703), (189, 104769), (243, 81487), (441, 44901), (567, 34923), (1323, 14967), (1663, 11907), (1701, 11641), (3969, 4989)]