28838187

素因数分解:

$3^4\times 7^1\times {\mathrm{181}}^1\times {\mathrm{281}}^1$

素因数の和:481

約数の個数: 40

約数和(自身を含む): 49681632

約数和(自身を除く): 20843445

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 181, 189, 281, 543, 567, 843, 1267, 1629, 1967, 2529, 3801, 4887, 5901, 7587, 11403, 14661, 17703, 22761, 34209, 50861, 53109, 102627, 152583, 159327, 356027, 457749, 1068081, 1373247, 3204243, 4119741, 9612729, 28838187]

約数ペア:

[(1, 28838187), (3, 9612729), (7, 4119741), (9, 3204243), (21, 1373247), (27, 1068081), (63, 457749), (81, 356027), (181, 159327), (189, 152583), (281, 102627), (543, 53109), (567, 50861), (843, 34209), (1267, 22761), (1629, 17703), (1967, 14661), (2529, 11403), (3801, 7587), (4887, 5901)]