21069867

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{683}}^1$

素因数の和:819

約数の個数: 32

約数和(自身を含む): 34933248

約数和(自身を除く): 13863381

約数列:

[1, 3, 7, 13, 21, 39, 91, 113, 273, 339, 683, 791, 1469, 2049, 2373, 4407, 4781, 8879, 10283, 14343, 26637, 30849, 62153, 77179, 186459, 231537, 540253, 1003327, 1620759, 3009981, 7023289, 21069867]

約数ペア:

[(1, 21069867), (3, 7023289), (7, 3009981), (13, 1620759), (21, 1003327), (39, 540253), (91, 231537), (113, 186459), (273, 77179), (339, 62153), (683, 30849), (791, 26637), (1469, 14343), (2049, 10283), (2373, 8879), (4407, 4781)]