81668937

素因数分解:

$3^1\times 7^2\times {\mathrm{131}}^1\times {\mathrm{4241}}^1$

素因数の和:4389

約数の個数: 24

約数和(自身を含む): 127667232

約数和(自身を除く): 45998295

約数列:

[1, 3, 7, 21, 49, 131, 147, 393, 917, 2751, 4241, 6419, 12723, 19257, 29687, 89061, 207809, 555571, 623427, 1666713, 3888997, 11666991, 27222979, 81668937]

約数ペア:

[(1, 81668937), (3, 27222979), (7, 11666991), (21, 3888997), (49, 1666713), (131, 623427), (147, 555571), (393, 207809), (917, 89061), (2751, 29687), (4241, 19257), (6419, 12723)]