20987262

素因数分解:

$2^1\times 3^4\times {\mathrm{353}}^1\times {\mathrm{367}}^1$

素因数の和:734

約数の個数: 40

約数和(自身を含む): 47288736

約数和(自身を除く): 26301474

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 353, 367, 706, 734, 1059, 1101, 2118, 2202, 3177, 3303, 6354, 6606, 9531, 9909, 19062, 19818, 28593, 29727, 57186, 59454, 129551, 259102, 388653, 777306, 1165959, 2331918, 3497877, 6995754, 10493631, 20987262]

約数ペア:

[(1, 20987262), (2, 10493631), (3, 6995754), (6, 3497877), (9, 2331918), (18, 1165959), (27, 777306), (54, 388653), (81, 259102), (162, 129551), (353, 59454), (367, 57186), (706, 29727), (734, 28593), (1059, 19818), (1101, 19062), (2118, 9909), (2202, 9531), (3177, 6606), (3303, 6354)]