128382040

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{20443}}^1$

素因数の和:20611

約数の個数: 32

約数和(自身を含む): 290713680

約数和(自身を除く): 162331640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 6280, 20443, 40886, 81772, 102215, 163544, 204430, 408860, 817720, 3209551, 6419102, 12838204, 16047755, 25676408, 32095510, 64191020, 128382040]

約数ペア:

[(1, 128382040), (2, 64191020), (4, 32095510), (5, 25676408), (8, 16047755), (10, 12838204), (20, 6419102), (40, 3209551), (157, 817720), (314, 408860), (628, 204430), (785, 163544), (1256, 102215), (1570, 81772), (3140, 40886), (6280, 20443)]