20847560

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{27431}}^1$

素因数の和:27461

約数の個数: 32

約数和(自身を含む): 49377600

約数和(自身を除く): 28530040

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 27431, 54862, 109724, 137155, 219448, 274310, 521189, 548620, 1042378, 1097240, 2084756, 2605945, 4169512, 5211890, 10423780, 20847560]

約数ペア:

[(1, 20847560), (2, 10423780), (4, 5211890), (5, 4169512), (8, 2605945), (10, 2084756), (19, 1097240), (20, 1042378), (38, 548620), (40, 521189), (76, 274310), (95, 219448), (152, 137155), (190, 109724), (380, 54862), (760, 27431)]