19903640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{26189}}^1$

素因数の和:26219

約数の個数: 32

約数和(自身を含む): 47142000

約数和(自身を除く): 27238360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 26189, 52378, 104756, 130945, 209512, 261890, 497591, 523780, 995182, 1047560, 1990364, 2487955, 3980728, 4975910, 9951820, 19903640]

約数ペア:

[(1, 19903640), (2, 9951820), (4, 4975910), (5, 3980728), (8, 2487955), (10, 1990364), (19, 1047560), (20, 995182), (38, 523780), (40, 497591), (76, 261890), (95, 209512), (152, 130945), (190, 104756), (380, 52378), (760, 26189)]