81609819

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{127}}^1\times {\mathrm{139}}^1$

素因数の和:359

約数の個数: 32

約数和(自身を含む): 116981760

約数和(自身を除く): 35371941

約数列:

[1, 3, 23, 67, 69, 127, 139, 201, 381, 417, 1541, 2921, 3197, 4623, 8509, 8763, 9313, 9591, 17653, 25527, 27939, 52959, 195707, 214199, 406019, 587121, 642597, 1182751, 1218057, 3548253, 27203273, 81609819]

約数ペア:

[(1, 81609819), (3, 27203273), (23, 3548253), (67, 1218057), (69, 1182751), (127, 642597), (139, 587121), (201, 406019), (381, 214199), (417, 195707), (1541, 52959), (2921, 27939), (3197, 25527), (4623, 17653), (8509, 9591), (8763, 9313)]