199920470

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{491}}^1\times {\mathrm{2143}}^1$

素因数の和:2660

約数の個数: 32

約数和(自身を含む): 379745280

約数和(自身を除く): 179824810

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 491, 982, 2143, 2455, 4286, 4910, 9329, 10715, 18658, 21430, 40717, 46645, 81434, 93290, 203585, 407170, 1052213, 2104426, 5261065, 10522130, 19992047, 39984094, 99960235, 199920470]

約数ペア:

[(1, 199920470), (2, 99960235), (5, 39984094), (10, 19992047), (19, 10522130), (38, 5261065), (95, 2104426), (190, 1052213), (491, 407170), (982, 203585), (2143, 93290), (2455, 81434), (4286, 46645), (4910, 40717), (9329, 21430), (10715, 18658)]