20965018

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{6199}}^1$

素因数の和:6309

約数の個数: 16

約数和(自身を含む): 33480000

約数和(自身を除く): 12514982

約数列:

[1, 2, 19, 38, 89, 178, 1691, 3382, 6199, 12398, 117781, 235562, 551711, 1103422, 10482509, 20965018]

約数ペア:

[(1, 20965018), (2, 10482509), (19, 1103422), (38, 551711), (89, 235562), (178, 117781), (1691, 12398), (3382, 6199)]