178721680

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{131413}}^1$

素因数の和:131443

約数の個数: 40

約数和(自身を含む): 439974072

約数和(自身を除く): 261252392

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 131413, 262826, 525652, 657065, 1051304, 1314130, 2102608, 2234021, 2628260, 4468042, 5256520, 8936084, 10513040, 11170105, 17872168, 22340210, 35744336, 44680420, 89360840, 178721680]

約数ペア:

[(1, 178721680), (2, 89360840), (4, 44680420), (5, 35744336), (8, 22340210), (10, 17872168), (16, 11170105), (17, 10513040), (20, 8936084), (34, 5256520), (40, 4468042), (68, 2628260), (80, 2234021), (85, 2102608), (136, 1314130), (170, 1051304), (272, 657065), (340, 525652), (680, 262826), (1360, 131413)]