138880917

素因数分解:

$3^2\times 7^1\times {\mathrm{313}}^1\times {\mathrm{7043}}^1$

素因数の和:7369

約数の個数: 24

約数和(自身を含む): 230028864

約数和(自身を除く): 91147947

約数列:

[1, 3, 7, 9, 21, 63, 313, 939, 2191, 2817, 6573, 7043, 19719, 21129, 49301, 63387, 147903, 443709, 2204459, 6613377, 15431213, 19840131, 46293639, 138880917]

約数ペア:

[(1, 138880917), (3, 46293639), (7, 19840131), (9, 15431213), (21, 6613377), (63, 2204459), (313, 443709), (939, 147903), (2191, 63387), (2817, 49301), (6573, 21129), (7043, 19719)]