21290367085

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{677}}^1\times {\mathrm{15607}}^1$

素因数の和:16333

約数の個数: 32

約数和(自身を含む): 28445018112

約数和(自身を除く): 7154651027

約数列:

[1, 5, 13, 31, 65, 155, 403, 677, 2015, 3385, 8801, 15607, 20987, 44005, 78035, 104935, 202891, 272831, 483817, 1014455, 1364155, 2419085, 6289621, 10565939, 31448105, 52829695, 137357207, 327544109, 686786035, 1637720545, 4258073417, 21290367085]

約数ペア:

[(1, 21290367085), (5, 4258073417), (13, 1637720545), (31, 686786035), (65, 327544109), (155, 137357207), (403, 52829695), (677, 31448105), (2015, 10565939), (3385, 6289621), (8801, 2419085), (15607, 1364155), (20987, 1014455), (44005, 483817), (78035, 272831), (104935, 202891)]