16640397

素因数分解:

$3^5\times {\mathrm{31}}^1\times {\mathrm{47}}^2$

素因数の和:140

約数の個数: 36

約数和(自身を含む): 26289536

約数和(自身を除く): 9649139

約数列:

[1, 3, 9, 27, 31, 47, 81, 93, 141, 243, 279, 423, 837, 1269, 1457, 2209, 2511, 3807, 4371, 6627, 7533, 11421, 13113, 19881, 39339, 59643, 68479, 118017, 178929, 205437, 354051, 536787, 616311, 1848933, 5546799, 16640397]

約数ペア:

[(1, 16640397), (3, 5546799), (9, 1848933), (27, 616311), (31, 536787), (47, 354051), (81, 205437), (93, 178929), (141, 118017), (243, 68479), (279, 59643), (423, 39339), (837, 19881), (1269, 13113), (1457, 11421), (2209, 7533), (2511, 6627), (3807, 4371)]