20921866

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{5171}}^1$

素因数の和:5214

約数の個数: 24

約数和(自身を含む): 38107296

約数和(自身を除く): 17185430

約数列:

[1, 2, 7, 14, 17, 34, 119, 238, 289, 578, 2023, 4046, 5171, 10342, 36197, 72394, 87907, 175814, 615349, 1230698, 1494419, 2988838, 10460933, 20921866]

約数ペア:

[(1, 20921866), (2, 10460933), (7, 2988838), (14, 1494419), (17, 1230698), (34, 615349), (119, 175814), (238, 87907), (289, 72394), (578, 36197), (2023, 10342), (4046, 5171)]