20337220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{491}}^1$

素因数の和:628

約数の個数: 48

約数和(自身を含む): 45460800

約数和(自身を除く): 25123580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 109, 190, 218, 380, 436, 491, 545, 982, 1090, 1964, 2071, 2180, 2455, 4142, 4910, 8284, 9329, 9820, 10355, 18658, 20710, 37316, 41420, 46645, 53519, 93290, 107038, 186580, 214076, 267595, 535190, 1016861, 1070380, 2033722, 4067444, 5084305, 10168610, 20337220]

約数ペア:

[(1, 20337220), (2, 10168610), (4, 5084305), (5, 4067444), (10, 2033722), (19, 1070380), (20, 1016861), (38, 535190), (76, 267595), (95, 214076), (109, 186580), (190, 107038), (218, 93290), (380, 53519), (436, 46645), (491, 41420), (545, 37316), (982, 20710), (1090, 18658), (1964, 10355), (2071, 9820), (2180, 9329), (2455, 8284), (4142, 4910)]