21685438

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{571}}^1\times {\mathrm{1117}}^1$

素因数の和:1707

約数の個数: 16

約数和(自身を含む): 34532784

約数和(自身を除く): 12847346

約数列:

[1, 2, 17, 34, 571, 1117, 1142, 2234, 9707, 18989, 19414, 37978, 637807, 1275614, 10842719, 21685438]

約数ペア:

[(1, 21685438), (2, 10842719), (17, 1275614), (34, 637807), (571, 37978), (1117, 19414), (1142, 18989), (2234, 9707)]