18719440

素因数分解:

$2^4\times 5^1\times {\mathrm{233993}}^1$

素因数の和:234006

約数の個数: 20

約数和(自身を含む): 43522884

約数和(自身を除く): 24803444

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 233993, 467986, 935972, 1169965, 1871944, 2339930, 3743888, 4679860, 9359720, 18719440]

約数ペア:

[(1, 18719440), (2, 9359720), (4, 4679860), (5, 3743888), (8, 2339930), (10, 1871944), (16, 1169965), (20, 935972), (40, 467986), (80, 233993)]