78870123

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{30323}}^1$

素因数の和:30363

約数の個数: 18

約数和(自身を含む): 121023084

約数和(自身を除く): 42152961

約数列:

[1, 3, 9, 17, 51, 153, 289, 867, 2601, 30323, 90969, 272907, 515491, 1546473, 4639419, 8763347, 26290041, 78870123]

約数ペア:

[(1, 78870123), (3, 26290041), (9, 8763347), (17, 4639419), (51, 1546473), (153, 515491), (289, 272907), (867, 90969), (2601, 30323)]