18466520

素因数分解:

$2^3\times 5^1\times {\mathrm{509}}^1\times {\mathrm{907}}^1$

素因数の和:1427

約数の個数: 32

約数和(自身を含む): 41677200

約数和(自身を除く): 23210680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 509, 907, 1018, 1814, 2036, 2545, 3628, 4072, 4535, 5090, 7256, 9070, 10180, 18140, 20360, 36280, 461663, 923326, 1846652, 2308315, 3693304, 4616630, 9233260, 18466520]

約数ペア:

[(1, 18466520), (2, 9233260), (4, 4616630), (5, 3693304), (8, 2308315), (10, 1846652), (20, 923326), (40, 461663), (509, 36280), (907, 20360), (1018, 18140), (1814, 10180), (2036, 9070), (2545, 7256), (3628, 5090), (4072, 4535)]