1288396040

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{361909}}^1$

素因数の和:362009

約数の個数: 32

約数和(自身を含む): 2931471000

約数和(自身を除く): 1643074960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 361909, 723818, 1447636, 1809545, 2895272, 3619090, 7238180, 14476360, 32209901, 64419802, 128839604, 161049505, 257679208, 322099010, 644198020, 1288396040]

約数ペア:

[(1, 1288396040), (2, 644198020), (4, 322099010), (5, 257679208), (8, 161049505), (10, 128839604), (20, 64419802), (40, 32209901), (89, 14476360), (178, 7238180), (356, 3619090), (445, 2895272), (712, 1809545), (890, 1447636), (1780, 723818), (3560, 361909)]