128471480

素因数分解:

$2^3\times 5^1\times {\mathrm{461}}^1\times {\mathrm{6967}}^1$

素因数の和:7439

約数の個数: 32

約数和(自身を含む): 289729440

約数和(自身を除く): 161257960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 461, 922, 1844, 2305, 3688, 4610, 6967, 9220, 13934, 18440, 27868, 34835, 55736, 69670, 139340, 278680, 3211787, 6423574, 12847148, 16058935, 25694296, 32117870, 64235740, 128471480]

約数ペア:

[(1, 128471480), (2, 64235740), (4, 32117870), (5, 25694296), (8, 16058935), (10, 12847148), (20, 6423574), (40, 3211787), (461, 278680), (922, 139340), (1844, 69670), (2305, 55736), (3688, 34835), (4610, 27868), (6967, 18440), (9220, 13934)]