20571160

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4993}}^1$

素因数の和:5107

約数の個数: 32

約数和(自身を含む): 46743840

約数和(自身を除く): 26172680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 4993, 9986, 19972, 24965, 39944, 49930, 99860, 199720, 514279, 1028558, 2057116, 2571395, 4114232, 5142790, 10285580, 20571160]

約数ペア:

[(1, 20571160), (2, 10285580), (4, 5142790), (5, 4114232), (8, 2571395), (10, 2057116), (20, 1028558), (40, 514279), (103, 199720), (206, 99860), (412, 49930), (515, 39944), (824, 24965), (1030, 19972), (2060, 9986), (4120, 4993)]