421040

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{277}}^1$

素因数の和:309

約数の個数: 40

約数和(自身を含む): 1034160

約数和(自身を除く): 613120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 277, 304, 380, 554, 760, 1108, 1385, 1520, 2216, 2770, 4432, 5263, 5540, 10526, 11080, 21052, 22160, 26315, 42104, 52630, 84208, 105260, 210520, 421040]

約数ペア:

[(1, 421040), (2, 210520), (4, 105260), (5, 84208), (8, 52630), (10, 42104), (16, 26315), (19, 22160), (20, 21052), (38, 11080), (40, 10526), (76, 5540), (80, 5263), (95, 4432), (152, 2770), (190, 2216), (277, 1520), (304, 1385), (380, 1108), (554, 760)]