20688116

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{307}}^1\times {\mathrm{991}}^1$

素因数の和:1319

約数の個数: 24

約数和(自身を含む): 38497536

約数和(自身を除く): 17809420

約数列:

[1, 2, 4, 17, 34, 68, 307, 614, 991, 1228, 1982, 3964, 5219, 10438, 16847, 20876, 33694, 67388, 304237, 608474, 1216948, 5172029, 10344058, 20688116]

約数ペア:

[(1, 20688116), (2, 10344058), (4, 5172029), (17, 1216948), (34, 608474), (68, 304237), (307, 67388), (614, 33694), (991, 20876), (1228, 16847), (1982, 10438), (3964, 5219)]