2019965320

素因数分解:

$2^3\times 5^1\times {\mathrm{401}}^1\times {\mathrm{125933}}^1$

素因数の和:126345

約数の個数: 32

約数和(自身を含む): 4556292120

約数和(自身を除く): 2536326800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 401, 802, 1604, 2005, 3208, 4010, 8020, 16040, 125933, 251866, 503732, 629665, 1007464, 1259330, 2518660, 5037320, 50499133, 100998266, 201996532, 252495665, 403993064, 504991330, 1009982660, 2019965320]

約数ペア:

[(1, 2019965320), (2, 1009982660), (4, 504991330), (5, 403993064), (8, 252495665), (10, 201996532), (20, 100998266), (40, 50499133), (401, 5037320), (802, 2518660), (1604, 1259330), (2005, 1007464), (3208, 629665), (4010, 503732), (8020, 251866), (16040, 125933)]