3948040

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1109}}^1$

素因数の和:1209

約数の個数: 32

約数和(自身を含む): 8991000

約数和(自身を除く): 5042960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1109, 1780, 2218, 3560, 4436, 5545, 8872, 11090, 22180, 44360, 98701, 197402, 394804, 493505, 789608, 987010, 1974020, 3948040]

約数ペア:

[(1, 3948040), (2, 1974020), (4, 987010), (5, 789608), (8, 493505), (10, 394804), (20, 197402), (40, 98701), (89, 44360), (178, 22180), (356, 11090), (445, 8872), (712, 5545), (890, 4436), (1109, 3560), (1780, 2218)]