9890405

素因数分解:

$5^1\times 7^3\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:178

約数の個数: 32

約数和(自身を含む): 14208000

約数和(自身を除く): 4317595

約数列:

[1, 5, 7, 35, 49, 73, 79, 245, 343, 365, 395, 511, 553, 1715, 2555, 2765, 3577, 3871, 5767, 17885, 19355, 25039, 27097, 28835, 40369, 125195, 135485, 201845, 282583, 1412915, 1978081, 9890405]

約数ペア:

[(1, 9890405), (5, 1978081), (7, 1412915), (35, 282583), (49, 201845), (73, 135485), (79, 125195), (245, 40369), (343, 28835), (365, 27097), (395, 25039), (511, 19355), (553, 17885), (1715, 5767), (2555, 3871), (2765, 3577)]