81971217

素因数分解:

$3^3\times {\mathrm{67}}^1\times {\mathrm{113}}^1\times {\mathrm{401}}^1$

素因数の和:590

約数の個数: 32

約数和(自身を含む): 124652160

約数和(自身を除く): 42680943

約数列:

[1, 3, 9, 27, 67, 113, 201, 339, 401, 603, 1017, 1203, 1809, 3051, 3609, 7571, 10827, 22713, 26867, 45313, 68139, 80601, 135939, 204417, 241803, 407817, 725409, 1223451, 3035971, 9107913, 27323739, 81971217]

約数ペア:

[(1, 81971217), (3, 27323739), (9, 9107913), (27, 3035971), (67, 1223451), (113, 725409), (201, 407817), (339, 241803), (401, 204417), (603, 135939), (1017, 80601), (1203, 68139), (1809, 45313), (3051, 26867), (3609, 22713), (7571, 10827)]