19978326

素因数分解:

$2^1\times 3^4\times {\mathrm{123323}}^1$

素因数の和:123337

約数の個数: 20

約数和(自身を含む): 44766612

約数和(自身を除く): 24788286

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 123323, 246646, 369969, 739938, 1109907, 2219814, 3329721, 6659442, 9989163, 19978326]

約数ペア:

[(1, 19978326), (2, 9989163), (3, 6659442), (6, 3329721), (9, 2219814), (18, 1109907), (27, 739938), (54, 369969), (81, 246646), (162, 123323)]