199711989

素因数分解:

$3^2\times {\mathrm{131}}^1\times {\mathrm{233}}^1\times {\mathrm{727}}^1$

素因数の和:1097

約数の個数: 24

約数和(自身を含む): 292324032

約数和(自身を除く): 92612043

約数列:

[1, 3, 9, 131, 233, 393, 699, 727, 1179, 2097, 2181, 6543, 30523, 91569, 95237, 169391, 274707, 285711, 508173, 857133, 1524519, 22190221, 66570663, 199711989]

約数ペア:

[(1, 199711989), (3, 66570663), (9, 22190221), (131, 1524519), (233, 857133), (393, 508173), (699, 285711), (727, 274707), (1179, 169391), (2097, 95237), (2181, 91569), (6543, 30523)]