20178394840

素因数分解:

$2^3\times 5^1\times {\mathrm{7309}}^1\times {\mathrm{69019}}^1$

素因数の和:76339

約数の個数: 32

約数和(自身を含む): 45408258000

約数和(自身を除く): 25229863160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 7309, 14618, 29236, 36545, 58472, 69019, 73090, 138038, 146180, 276076, 292360, 345095, 552152, 690190, 1380380, 2760760, 504459871, 1008919742, 2017839484, 2522299355, 4035678968, 5044598710, 10089197420, 20178394840]

約数ペア:

[(1, 20178394840), (2, 10089197420), (4, 5044598710), (5, 4035678968), (8, 2522299355), (10, 2017839484), (20, 1008919742), (40, 504459871), (7309, 2760760), (14618, 1380380), (29236, 690190), (36545, 552152), (58472, 345095), (69019, 292360), (73090, 276076), (138038, 146180)]