18915795

素因数分解:

$3^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2297}}^1$

素因数の和:2372

約数の個数: 32

約数和(自身を含む): 34194240

約数和(自身を除く): 15278445

約数列:

[1, 3, 5, 9, 15, 27, 45, 61, 135, 183, 305, 549, 915, 1647, 2297, 2745, 6891, 8235, 11485, 20673, 34455, 62019, 103365, 140117, 310095, 420351, 700585, 1261053, 2101755, 3783159, 6305265, 18915795]

約数ペア:

[(1, 18915795), (3, 6305265), (5, 3783159), (9, 2101755), (15, 1261053), (27, 700585), (45, 420351), (61, 310095), (135, 140117), (183, 103365), (305, 62019), (549, 34455), (915, 20673), (1647, 11485), (2297, 8235), (2745, 6891)]