21132560

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13903}}^1$

素因数の和:13935

約数の個数: 40

約数和(自身を含む): 51722880

約数和(自身を除く): 30590320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13903, 27806, 55612, 69515, 111224, 139030, 222448, 264157, 278060, 528314, 556120, 1056628, 1112240, 1320785, 2113256, 2641570, 4226512, 5283140, 10566280, 21132560]

約数ペア:

[(1, 21132560), (2, 10566280), (4, 5283140), (5, 4226512), (8, 2641570), (10, 2113256), (16, 1320785), (19, 1112240), (20, 1056628), (38, 556120), (40, 528314), (76, 278060), (80, 264157), (95, 222448), (152, 139030), (190, 111224), (304, 69515), (380, 55612), (760, 27806), (1520, 13903)]