20003781

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{409}}^1$

素因数の和:573

約数の個数: 32

約数和(自身を含む): 32590080

約数和(自身を除く): 12586299

約数列:

[1, 3, 7, 17, 21, 51, 119, 137, 357, 409, 411, 959, 1227, 2329, 2863, 2877, 6953, 6987, 8589, 16303, 20859, 48671, 48909, 56033, 146013, 168099, 392231, 952561, 1176693, 2857683, 6667927, 20003781]

約数ペア:

[(1, 20003781), (3, 6667927), (7, 2857683), (17, 1176693), (21, 952561), (51, 392231), (119, 168099), (137, 146013), (357, 56033), (409, 48909), (411, 48671), (959, 20859), (1227, 16303), (2329, 8589), (2863, 6987), (2877, 6953)]