19601720

素因数分解:

$2^3\times 5^1\times {\mathrm{461}}^1\times {\mathrm{1063}}^1$

素因数の和:1535

約数の個数: 32

約数和(自身を含む): 44241120

約数和(自身を除く): 24639400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 461, 922, 1063, 1844, 2126, 2305, 3688, 4252, 4610, 5315, 8504, 9220, 10630, 18440, 21260, 42520, 490043, 980086, 1960172, 2450215, 3920344, 4900430, 9800860, 19601720]

約数ペア:

[(1, 19601720), (2, 9800860), (4, 4900430), (5, 3920344), (8, 2450215), (10, 1960172), (20, 980086), (40, 490043), (461, 42520), (922, 21260), (1063, 18440), (1844, 10630), (2126, 9220), (2305, 8504), (3688, 5315), (4252, 4610)]