19919115

素因数分解:

$3^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{359}}^1$

素因数の和:513

約数の個数: 40

約数和(自身を含む): 36067680

約数和(自身を除く): 16148565

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 137, 359, 405, 411, 685, 1077, 1233, 1795, 2055, 3231, 3699, 5385, 6165, 9693, 11097, 16155, 18495, 29079, 48465, 49183, 55485, 145395, 147549, 245915, 442647, 737745, 1327941, 2213235, 3983823, 6639705, 19919115]

約数ペア:

[(1, 19919115), (3, 6639705), (5, 3983823), (9, 2213235), (15, 1327941), (27, 737745), (45, 442647), (81, 245915), (135, 147549), (137, 145395), (359, 55485), (405, 49183), (411, 48465), (685, 29079), (1077, 18495), (1233, 16155), (1795, 11097), (2055, 9693), (3231, 6165), (3699, 5385)]