205804805

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^3\times {\mathrm{199}}^1$

素因数の和:290

約数の個数: 32

約数和(自身を含む): 274752000

約数和(自身を除く): 68947195

約数列:

[1, 5, 17, 23, 85, 115, 199, 391, 529, 995, 1955, 2645, 3383, 4577, 8993, 12167, 16915, 22885, 44965, 60835, 77809, 105271, 206839, 389045, 526355, 1034195, 1789607, 2421233, 8948035, 12106165, 41160961, 205804805]

約数ペア:

[(1, 205804805), (5, 41160961), (17, 12106165), (23, 8948035), (85, 2421233), (115, 1789607), (199, 1034195), (391, 526355), (529, 389045), (995, 206839), (1955, 105271), (2645, 77809), (3383, 60835), (4577, 44965), (8993, 22885), (12167, 16915)]