39239440

素因数分解:

$2^4\times 5^1\times {\mathrm{490493}}^1$

素因数の和:490506

約数の個数: 20

約数和(自身を含む): 91231884

約数和(自身を除く): 51992444

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 490493, 980986, 1961972, 2452465, 3923944, 4904930, 7847888, 9809860, 19619720, 39239440]

約数ペア:

[(1, 39239440), (2, 19619720), (4, 9809860), (5, 7847888), (8, 4904930), (10, 3923944), (16, 2452465), (20, 1961972), (40, 980986), (80, 490493)]