2159440

素因数分解:

$2^4\times 5^1\times {\mathrm{26993}}^1$

素因数の和:27006

約数の個数: 20

約数和(自身を含む): 5020884

約数和(自身を除く): 2861444

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 26993, 53986, 107972, 134965, 215944, 269930, 431888, 539860, 1079720, 2159440]

約数ペア:

[(1, 2159440), (2, 1079720), (4, 539860), (5, 431888), (8, 269930), (10, 215944), (16, 134965), (20, 107972), (40, 53986), (80, 26993)]