19910480

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13099}}^1$

素因数の和:13131

約数の個数: 40

約数和(自身を含む): 48732000

約数和(自身を除く): 28821520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13099, 26198, 52396, 65495, 104792, 130990, 209584, 248881, 261980, 497762, 523960, 995524, 1047920, 1244405, 1991048, 2488810, 3982096, 4977620, 9955240, 19910480]

約数ペア:

[(1, 19910480), (2, 9955240), (4, 4977620), (5, 3982096), (8, 2488810), (10, 1991048), (16, 1244405), (19, 1047920), (20, 995524), (38, 523960), (40, 497762), (76, 261980), (80, 248881), (95, 209584), (152, 130990), (190, 104792), (304, 65495), (380, 52396), (760, 26198), (1520, 13099)]