20475609

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{647}}^1$

素因数の和:805

約数の個数: 32

約数和(自身を含む): 34338816

約数和(自身を除く): 13863207

約数列:

[1, 3, 7, 11, 21, 33, 77, 137, 231, 411, 647, 959, 1507, 1941, 2877, 4521, 4529, 7117, 10549, 13587, 21351, 31647, 49819, 88639, 149457, 265917, 620473, 975029, 1861419, 2925087, 6825203, 20475609]

約数ペア:

[(1, 20475609), (3, 6825203), (7, 2925087), (11, 1861419), (21, 975029), (33, 620473), (77, 265917), (137, 149457), (231, 88639), (411, 49819), (647, 31647), (959, 21351), (1507, 13587), (1941, 10549), (2877, 7117), (4521, 4529)]