208037781

素因数分解:

$3^3\times 7^2\times {\mathrm{157247}}^1$

素因数の和:157270

約数の個数: 24

約数和(自身を含む): 358525440

約数和(自身を除く): 150487659

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 157247, 471741, 1100729, 1415223, 3302187, 4245669, 7705103, 9906561, 23115309, 29719683, 69345927, 208037781]

約数ペア:

[(1, 208037781), (3, 69345927), (7, 29719683), (9, 23115309), (21, 9906561), (27, 7705103), (49, 4245669), (63, 3302187), (147, 1415223), (189, 1100729), (441, 471741), (1323, 157247)]