21154095

素因数分解:

$3^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2207}}^1$

素因数の和:2292

約数の個数: 32

約数和(自身を含む): 38154240

約数和(自身を除く): 17000145

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 135, 213, 355, 639, 1065, 1917, 2207, 3195, 6621, 9585, 11035, 19863, 33105, 59589, 99315, 156697, 297945, 470091, 783485, 1410273, 2350455, 4230819, 7051365, 21154095]

約数ペア:

[(1, 21154095), (3, 7051365), (5, 4230819), (9, 2350455), (15, 1410273), (27, 783485), (45, 470091), (71, 297945), (135, 156697), (213, 99315), (355, 59589), (639, 33105), (1065, 19863), (1917, 11035), (2207, 9585), (3195, 6621)]