19997691

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{233}}^1$

素因数の和:371

約数の個数: 32

約数和(自身を含む): 31569408

約数和(自身を除く): 11571717

約数列:

[1, 3, 7, 21, 61, 67, 183, 201, 233, 427, 469, 699, 1281, 1407, 1631, 4087, 4893, 12261, 14213, 15611, 28609, 42639, 46833, 85827, 99491, 109277, 298473, 327831, 952271, 2856813, 6665897, 19997691]

約数ペア:

[(1, 19997691), (3, 6665897), (7, 2856813), (21, 952271), (61, 327831), (67, 298473), (183, 109277), (201, 99491), (233, 85827), (427, 46833), (469, 42639), (699, 28609), (1281, 15611), (1407, 14213), (1631, 12261), (4087, 4893)]