20218572020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{195047}}^1$

素因数の和:195200

約数の個数: 48

約数和(自身を含む): 43647061248

約数和(自身を除く): 23428489228

約数列:

[1, 2, 4, 5, 10, 20, 71, 73, 142, 146, 284, 292, 355, 365, 710, 730, 1420, 1460, 5183, 10366, 20732, 25915, 51830, 103660, 195047, 390094, 780188, 975235, 1950470, 3900940, 13848337, 14238431, 27696674, 28476862, 55393348, 56953724, 69241685, 71192155, 138483370, 142384310, 276966740, 284768620, 1010928601, 2021857202, 4043714404, 5054643005, 10109286010, 20218572020]

約数ペア:

[(1, 20218572020), (2, 10109286010), (4, 5054643005), (5, 4043714404), (10, 2021857202), (20, 1010928601), (71, 284768620), (73, 276966740), (142, 142384310), (146, 138483370), (284, 71192155), (292, 69241685), (355, 56953724), (365, 55393348), (710, 28476862), (730, 27696674), (1420, 14238431), (1460, 13848337), (5183, 3900940), (10366, 1950470), (20732, 975235), (25915, 780188), (51830, 390094), (103660, 195047)]