991156

素因数分解:

$2^2\times {\mathrm{37}}^2\times {\mathrm{181}}^1$

素因数の和:259

約数の個数: 18

約数和(自身を含む): 1792518

約数和(自身を除く): 801362

約数列:

[1, 2, 4, 37, 74, 148, 181, 362, 724, 1369, 2738, 5476, 6697, 13394, 26788, 247789, 495578, 991156]

約数ペア:

[(1, 991156), (2, 495578), (4, 247789), (37, 26788), (74, 13394), (148, 6697), (181, 5476), (362, 2738), (724, 1369)]