20808333

素因数分解:

$3^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{941}}^1$

素因数の和:976

約数の個数: 48

約数和(自身を含む): 38403456

約数和(自身を除く): 17595123

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 81, 91, 117, 189, 243, 273, 351, 567, 819, 941, 1053, 1701, 2457, 2823, 3159, 6587, 7371, 8469, 12233, 19761, 22113, 25407, 36699, 59283, 76221, 85631, 110097, 177849, 228663, 256893, 330291, 533547, 770679, 990873, 1600641, 2312037, 2972619, 6936111, 20808333]

約数ペア:

[(1, 20808333), (3, 6936111), (7, 2972619), (9, 2312037), (13, 1600641), (21, 990873), (27, 770679), (39, 533547), (63, 330291), (81, 256893), (91, 228663), (117, 177849), (189, 110097), (243, 85631), (273, 76221), (351, 59283), (567, 36699), (819, 25407), (941, 22113), (1053, 19761), (1701, 12233), (2457, 8469), (2823, 7371), (3159, 6587)]