31689891

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{3943}}^1$

素因数の和:4015

約数の個数: 24

約数和(自身を含む): 49221120

約数和(自身を除く): 17531229

約数列:

[1, 3, 9, 19, 47, 57, 141, 171, 423, 893, 2679, 3943, 8037, 11829, 35487, 74917, 185321, 224751, 555963, 674253, 1667889, 3521099, 10563297, 31689891]

約数ペア:

[(1, 31689891), (3, 10563297), (9, 3521099), (19, 1667889), (47, 674253), (57, 555963), (141, 224751), (171, 185321), (423, 74917), (893, 35487), (2679, 11829), (3943, 8037)]