20503809

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{919}}^1$

素因数の和:1029

約数の個数: 24

約数和(自身を含む): 30904640

約数和(自身を除く): 10400831

約数列:

[1, 3, 9, 37, 67, 111, 201, 333, 603, 919, 2479, 2757, 7437, 8271, 22311, 34003, 61573, 102009, 184719, 306027, 554157, 2278201, 6834603, 20503809]

約数ペア:

[(1, 20503809), (3, 6834603), (9, 2278201), (37, 554157), (67, 306027), (111, 184719), (201, 102009), (333, 61573), (603, 34003), (919, 22311), (2479, 8271), (2757, 7437)]