20118915

素因数分解:

$3^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2099}}^1$

素因数の和:2184

約数の個数: 32

約数和(自身を含む): 36288000

約数和(自身を除く): 16169085

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 135, 213, 355, 639, 1065, 1917, 2099, 3195, 6297, 9585, 10495, 18891, 31485, 56673, 94455, 149029, 283365, 447087, 745145, 1341261, 2235435, 4023783, 6706305, 20118915]

約数ペア:

[(1, 20118915), (3, 6706305), (5, 4023783), (9, 2235435), (15, 1341261), (27, 745145), (45, 447087), (71, 283365), (135, 149029), (213, 94455), (355, 56673), (639, 31485), (1065, 18891), (1917, 10495), (2099, 9585), (3195, 6297)]