154704280

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{7877}}^1$

素因数の和:8379

約数の個数: 32

約数和(自身を含む): 348837840

約数和(自身を除く): 194133560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1964, 2455, 3928, 4910, 7877, 9820, 15754, 19640, 31508, 39385, 63016, 78770, 157540, 315080, 3867607, 7735214, 15470428, 19338035, 30940856, 38676070, 77352140, 154704280]

約数ペア:

[(1, 154704280), (2, 77352140), (4, 38676070), (5, 30940856), (8, 19338035), (10, 15470428), (20, 7735214), (40, 3867607), (491, 315080), (982, 157540), (1964, 78770), (2455, 63016), (3928, 39385), (4910, 31508), (7877, 19640), (9820, 15754)]