181437040

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{20807}}^1$

素因数の和:20929

約数の個数: 40

約数和(自身を含む): 425731680

約数和(自身を除く): 244294640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8720, 20807, 41614, 83228, 104035, 166456, 208070, 332912, 416140, 832280, 1664560, 2267963, 4535926, 9071852, 11339815, 18143704, 22679630, 36287408, 45359260, 90718520, 181437040]

約数ペア:

[(1, 181437040), (2, 90718520), (4, 45359260), (5, 36287408), (8, 22679630), (10, 18143704), (16, 11339815), (20, 9071852), (40, 4535926), (80, 2267963), (109, 1664560), (218, 832280), (436, 416140), (545, 332912), (872, 208070), (1090, 166456), (1744, 104035), (2180, 83228), (4360, 41614), (8720, 20807)]