20815795

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4159}}^1$

素因数の和:4195

約数の個数: 32

約数和(自身を含む): 33546240

約数和(自身を除く): 12730445

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 143, 385, 455, 715, 1001, 4159, 5005, 20795, 29113, 45749, 54067, 145565, 228745, 270335, 320243, 378469, 594737, 1601215, 1892345, 2973685, 4163159, 20815795]

約数ペア:

[(1, 20815795), (5, 4163159), (7, 2973685), (11, 1892345), (13, 1601215), (35, 594737), (55, 378469), (65, 320243), (77, 270335), (91, 228745), (143, 145565), (385, 54067), (455, 45749), (715, 29113), (1001, 20795), (4159, 5005)]