20027240

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^2\times {\mathrm{521}}^1$

素因数の和:594

約数の個数: 48

約数和(自身を含む): 46651140

約数和(自身を除く): 26623900

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 521, 620, 961, 1042, 1240, 1922, 2084, 2605, 3844, 4168, 4805, 5210, 7688, 9610, 10420, 16151, 19220, 20840, 32302, 38440, 64604, 80755, 129208, 161510, 323020, 500681, 646040, 1001362, 2002724, 2503405, 4005448, 5006810, 10013620, 20027240]

約数ペア:

[(1, 20027240), (2, 10013620), (4, 5006810), (5, 4005448), (8, 2503405), (10, 2002724), (20, 1001362), (31, 646040), (40, 500681), (62, 323020), (124, 161510), (155, 129208), (248, 80755), (310, 64604), (521, 38440), (620, 32302), (961, 20840), (1042, 19220), (1240, 16151), (1922, 10420), (2084, 9610), (2605, 7688), (3844, 5210), (4168, 4805)]