129019760

素因数分解:

$2^4\times 5^1\times {\mathrm{1612747}}^1$

素因数の和:1612760

約数の個数: 20

約数和(自身を含む): 299971128

約数和(自身を除く): 170951368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1612747, 3225494, 6450988, 8063735, 12901976, 16127470, 25803952, 32254940, 64509880, 129019760]

約数ペア:

[(1, 129019760), (2, 64509880), (4, 32254940), (5, 25803952), (8, 16127470), (10, 12901976), (16, 8063735), (20, 6450988), (40, 3225494), (80, 1612747)]