21512560

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{14153}}^1$

素因数の和:14185

約数の個数: 40

約数和(自身を含む): 52652880

約数和(自身を除く): 31140320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 14153, 28306, 56612, 70765, 113224, 141530, 226448, 268907, 283060, 537814, 566120, 1075628, 1132240, 1344535, 2151256, 2689070, 4302512, 5378140, 10756280, 21512560]

約数ペア:

[(1, 21512560), (2, 10756280), (4, 5378140), (5, 4302512), (8, 2689070), (10, 2151256), (16, 1344535), (19, 1132240), (20, 1075628), (38, 566120), (40, 537814), (76, 283060), (80, 268907), (95, 226448), (152, 141530), (190, 113224), (304, 70765), (380, 56612), (760, 28306), (1520, 14153)]