638820470

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{78191}}^1$

素因数の和:78260

約数の個数: 32

約数和(自身を含む): 1238561280

約数和(自身を除く): 599740810

約数列:

[1, 2, 5, 10, 19, 38, 43, 86, 95, 190, 215, 430, 817, 1634, 4085, 8170, 78191, 156382, 390955, 781910, 1485629, 2971258, 3362213, 6724426, 7428145, 14856290, 16811065, 33622130, 63882047, 127764094, 319410235, 638820470]

約数ペア:

[(1, 638820470), (2, 319410235), (5, 127764094), (10, 63882047), (19, 33622130), (38, 16811065), (43, 14856290), (86, 7428145), (95, 6724426), (190, 3362213), (215, 2971258), (430, 1485629), (817, 781910), (1634, 390955), (4085, 156382), (8170, 78191)]